Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eb7453b6518bd31…

MALICIOUS

PDF

96.9 KB Created: 2021-07-09 18:26:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 558c8976bdf246f3565ac37cfe4fe42c SHA-1: 591c74a957c2501a9c43de35c3a2d6127c5ebf39 SHA-256: 6eb7453b6518bd311b264ee156d0dc80b88f7195231c362b700760b1b36445f4
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting, likely to redirect users to malicious content. The presence of a 'download button' heuristic further suggests a lure to trick users into clicking these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/1d246d3f3c6f1dfb56bda7ae13bdc525/94815709167.pdf In PDF document text
    • http://jocoseatee.com/userfiles/files/detekarotufamobenevimuxov.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/8adogsme8h3sim3fefgpt6n21r/nizokazojetebotexuwutuj.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608a7350b8159---fomofamolosifedexegu.pdfIn PDF document text
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160946540a16f8---46178983563.pdfIn PDF document text
    • http://alianzablue.com/aym_image/files/lidekuneneloverabajeru.pdfIn PDF document text
    • https://thesaddlebank.com/wp-content/plugins/super-forms/uploads/php/files/6a7ph5eo3lmun09tq7n4204432/xiwemi.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/81e8c347d48fef192246d713c4378e0f/11141694599.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/b3795fc898387fe4f1f02ed0f0f5ef0c/riwijipemiji.pdfIn PDF document text
    • http://vce34.ru/attachments/file/17712903565.pdfIn PDF document text
    • http://alexdisinfestazioni.com/userfiles/files/vatiroxevawatekovaxuwizi.pdfIn PDF document text
    • https://elbag.net/wp-content/plugins/super-forms/uploads/php/files/2ec8097b818019f6e99300ce66bb53b0/wotavonakemewowukupukip.pdfIn PDF document text
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ea09284b99---mugepalumomabuxaxenitu.pdfIn PDF document text
    • http://mp-hd.de/data/aktualnosci_imgs/file/dedutufepoxar.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d9257d6db16---zezujo.pdfIn PDF document text
    • http://aranykoronakft.hu/userfiles/file/77572146345.pdfIn PDF document text
    • http://arci-mp.fr/admin/File/navije.pdfIn PDF document text
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b4c310a27bf---paforobomodizibig.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/ba5b7caa36c1def010df17d14a044db5/70975522322.pdfIn PDF document text
    • http://yonseri.org/userfiles/files/kibafemavojevawikirajuj.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608e8f34b5d2f---butanibon.pdfIn PDF document text
    • https://specialbrands.gr/wp-content/plugins/super-forms/uploads/php/files/82dd3a0196b467c20a19203ccd1e0e4a/jirasakudoleguf.pdfIn PDF document text
    • https://www.analfissur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160722ae77a7a6---25706685343.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ba31db6bfd---zumuzavaxopinibimazuwop.pdfIn PDF document text
    • http://lapenya.cat/imgjovesnaves/file/47074155162.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/kuwekefekifojudopasem.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=class+9+english+reach+for+the+top+question+answerPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000114e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114E8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012cfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CFA 17420 bytes
SHA-256: 036fb3994f3ad841621a0a2aaabb63b75dcde00a0e1def94fd9940ff7eed0016
font_02_sfnt_off000159e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x159E9 11288 bytes
SHA-256: 311cf290ef548684fce26bcfeda3d585074c03552483ea66d850eaca67a406fe

Open this report in the interactive analyzer, or submit your own file for analysis.