Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b8de57fe362f89…

MALICIOUS

PDF

80.0 KB Created: 2021-09-15 10:14:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 6b103dc41e528f875d49e0de6c341228 SHA-1: 17051bc19c4143a30d8bda3b1d3a16f4c8cf4d7a SHA-256: 00b8de57fe362f89754ff5bddd5c35e36981e7e4db7456ed25526b86fdb8a9b7
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it is a link farm hosted on potentially compromised or disposable domains, designed to redirect users to external content. The presence of a 'download button' lure and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggest a malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the overall structure and URL patterns are indicative of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crewmak.ru/uplcv?utm_term=my+tom+2+mod+apk PDF link annotation
    • http://fabrikando.com/cmsimple/images/file/77894475978.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614199ff12a1c---ketobomidibudas.pdfIn PDF document text
    • http://caythuocnam.org/images/files/gekepopo.pdfIn PDF document text
    • http://e2ingenieros.com/ckfinder/userfiles/files/93855047326.pdfIn PDF document text
    • http://lehnerkom.de/images/uploaded/file/39228305506.pdfIn PDF document text
    • http://unicorn-furnitures.com/d/files/zelulidixofagozojogoj.pdfIn PDF document text
    • http://khachsanmyngoc.com/upload/files/36278762910.pdfIn PDF document text
    • http://email-database.info/userfiles/file/luwokosar.pdfIn PDF document text
    • https://nationalshield-uae.com/userfiles/files/nisabagavaj.pdfIn PDF document text
    • https://idd.no/ckfinder/userfiles/files/nazudasejib.pdfIn PDF document text
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/161410b0c52e97---68008249072.pdfIn PDF document text
    • http://tamtamphat.com/upload/files/lilafur.pdfIn PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/161367ea589531---varunetirobifepurizo.pdfIn PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/80af84beba3c366f175a1c875bb6a65f/fawosukavunebeviwixemupud.pdfIn PDF document text
    • http://www.psoealora.es/ckfinder/userfiles/files/domazikuvitulagajuta.pdfIn PDF document text
    • http://thepducphat.com/upload/files/kalifaropojogoju.pdfIn PDF document text
    • https://nmcs.ca/userfiles/files/minupikon.pdfIn PDF document text
    • http://dynamic1984.com/user_file/file/37828869529.pdfIn PDF document text
    • https://stiglic.sk/userfiles/file/8263357768.pdfIn PDF document text
    • http://aasghsflqsae.handylover.com/upload/files/37520191092.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/16130750828d9a---fobawinijuf.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2EF 10232 bytes
SHA-256: 7491497faa5edb5cd9159b29be159d67e7d29c231ca3a3554fe63e060f4ccd40
font_01_sfnt_off0000ea03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA03 18656 bytes
SHA-256: 288098822f679d07f37c34a2b8158c404b59ff2ed772dfa4e7a853212e24772a
font_02_sfnt_off00011ad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AD6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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