Malicious PDF — malware analysis report

Static analysis result for SHA-256 07194a9b17c0a5b1…

MALICIOUS

PDF

84.3 KB Created: 2021-07-07 21:50:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 16e292431282ff26d5971a9b240e7a8c SHA-1: 1c8d4c1111abbaba541c2c44de3faa4fa3ff047f SHA-256: 07194a9b17c0a5b17936fe1311e25d80ca92f62eb1a53490a2c3395588fb6451
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to compromised WordPress upload directories, suggesting it's designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. No scripts were extracted, but the link farm structure is a common tactic for initial access.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 6

  • 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.
  • 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://inwebjor.ru/uplcv?utm_term=protect+us+oh+lord PDF link annotation
    • http://papinchess.ru/userfiles/file/31713604528.pdfIn PDF document text
    • http://szao-spb.ru/images/news/file/31562222002.pdfIn PDF document text
    • http://compufoxmail.com/userfiles/file/8943132539.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160daeb541291c---51344240840.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cf980c1ccb---fixube.pdfIn PDF document text
    • https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/98394a5dfb62a24be309b746864dad4b/puvotiwigugejod.pdfIn PDF document text
    • http://xn--2-140-swe8h.xn--p1ai/files/tipixutesenolitorivov.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/af74207fa4a1b640b3f2a85ba0e98c53/93951219840.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/1779829e51b57244ee6278080c9b5242/53428223699.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/kac6di2uv6ab1nih36v4pv07g1/63264153998.pdfIn PDF document text
    • http://moneymaker-gold.de/files/53608239988.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/20912943528.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16089a07b5750c---35534567572.pdfIn PDF document text
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/jcirvvf7jm834cu8b86d5rs523/17169471975.pdfIn PDF document text
    • https://big-affaires.com/img/pics/files/nuwitiminekobefojigisuwiz.pdfIn PDF document text
    • http://gruppocaminiti.it/userfiles/files/39227567977.pdfIn PDF document text
    • https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/jf8s9i2vu00oep5ic3sepalen3/32485260821.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a445568d00f---73859492520.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/2ed6a758ee8a2318c25b0bc4964f734a/40520443314.pdfIn PDF document text
    • http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160bf06d57b1c2---84779441757.pdfIn PDF document text
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16077aa62a37fe---fipazutovisimi.pdfIn PDF document text
    • http://dieta-plus.pl/userfiles/file/6394297265.pdfIn PDF document text
    • http://www.vikingmaterials.com/img/wawosanakawerav.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/160829b885d642---wabakazakikaxaron.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_off0000eac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC8 16364 bytes
SHA-256: d4ad546732c54288abb300391d579031055f3ee349b1cc574a52457ba7903027
font_01_sfnt_off0001151e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1151E 10208 bytes
SHA-256: b489dcf630b8740b42a4673662ec6fb5e9dd55836eff34cf97750f112b618dc0
font_02_sfnt_off00012c33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C33 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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