Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b05d08d7b3ec51c…

MALICIOUS

PDF

100.2 KB Created: 2021-07-02 21:54:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 78578bee5d6c1e04f422901630990ac7 SHA-1: d1f039b9fc9daf7762e9634559ba933ec3ce7275 SHA-256: 9b05d08d7b3ec51c46acebf63a827829955a0e1d45675598000f8ed34f760f7e
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm with numerous URLs pointing to compromised WordPress sites and disposable domains, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious workflow designed to trick users into downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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://allytemp.ru/uplcv?utm_term=indian+economy+notes+vision+ias PDF link annotation
    • http://mientaytourist.com/uploads/files/duvonopekujif.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607bdbf40c304---nefibolokumipun.pdfIn PDF document text
    • https://langumeistras.lt/i/File/lavadunemifoxumiwe.pdfIn PDF document text
    • http://www.associatedomains.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607579078d005---dofabuni.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5198d80082---fadetubupum.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/56d4aa6d7b4c232d13cc9a9d7887cbfb/buwimamamaxutu.pdfIn PDF document text
    • http://optykglowacki.pl/obrazki/files/borenumakolasojureda.pdfIn PDF document text
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/d3e0ff962db4fa6c1f6cf893e4ae3c68/60011142765.pdfIn PDF document text
    • https://absolut-fit-and-dance.de/wp-content/plugins/super-forms/uploads/php/files/tribhmtg1bd86nepv5uqdokruq/22007517109.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160aac90be05ac---rowozedikimugatopuze.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160857d5583378---xeduliwukukijevenowerum.pdfIn PDF document text
    • https://adamant54.ru/userfiles/files/nogifopefurila.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/530be2c88c9a4ed45e469a632a73022c/milukak.pdfIn PDF document text
    • http://china-baby-clothes.com/d/files/37693256826.pdfIn PDF document text
    • https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/913d6e1c22caf6bfca509b93417023e6/61622283647.pdfIn PDF document text
    • http://etcad.net/np/upfile/file/geginure.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/1606c960de3b14---kepog.pdfIn PDF document text
    • https://aldwalia.com/userfiles/files/ninufeziko.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607dbf6da9e54---47008871899.pdfIn PDF document text
    • http://xn----8sbnbd9chja.xn--p1ai/userfiles/file/keduz.pdfIn PDF document text
    • https://autoandtruckrepair.net/nbloom/fckuploads/file/nidojadosokudodubakapos.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082632650def---78312788589.pdfIn PDF document text
    • http://aps-mes.com/files/file/45875271606.pdfIn PDF document text
    • 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_off00011a4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A4A 10516 bytes
SHA-256: 8170ab9790a3787cd959be5a068b0cbee954918f9ed6313e8d36b7b3aab46740
font_01_sfnt_off0001323c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1323C 21600 bytes
SHA-256: 3e2c453d13677651f2b9b6b0efe9b44e8af2a44660cf64067ff4bbc2f5d875cc
font_02_sfnt_off00016bc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16BC7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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