Malicious PDF — malware analysis report

Static analysis result for SHA-256 08bf2f197ea395aa…

MALICIOUS

PDF

111.3 KB Created: 2021-06-26 20:57:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 9c1e295f46cf37e05e0eb0f662498b45 SHA-1: 3aa61a8550bc5656f51e8fd28bfd9774c0306a01 SHA-256: 08bf2f197ea395aac42b13d614016c1c79129e7a88e353771012b5695f0a5349
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with phishing and malware delivery campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://irlanc.ru/uplcv?utm_term=her+belly+button PDF link annotation
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/92b6fdf9c6ddee090cd5af8ce1410606/levemiko.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b7edf4e513e---15092368794.pdfIn PDF document text
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/j4g1n55teth4ver6p511100tgr/tujonewuteripojudej.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/87288137053.pdfIn PDF document text
    • https://detectiveoffice.net/userfiles/file/63366315622.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/8at1r6ci84884as1lcqvltn7ug/14062809473.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/d4faabddf5607ad44a6f3c0c40c18805/rolivenojizuzunesepapir.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af071e3d77b---mopedupuwodev.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/b965vhkhqar4qqrgsu0pp0vri2/801843719.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/sto7jhr2ujlcmf07pp1u1coct3/bigosuwexoxadoraninowabo.pdfIn PDF document text
    • https://lamaisonducoeur.ca/upload/editor/file/93487163084.pdfIn PDF document text
    • http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/b3720d972e7616d43f9350dddde76d65/lufarelufupevuvalotipusex.pdfIn PDF document text
    • http://rencontres-icare.org/userfiles/file/37912684657.pdfIn PDF document text
    • http://adveotec.com/img/file/jopedekarija.pdfIn PDF document text
    • https://capital-tic.com/upload/ckfinder_temp/files/20210602141633.pdfIn PDF document text
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/rde8tb9ohd3k1lv72nqedsg11k/lajaxuti.pdfIn PDF document text
    • http://changecn.net/ckupload/files/9543424874.pdfIn PDF document text
    • http://china-miyaco.com/img/file/2021691475.pdfIn PDF document text
    • http://archerelectricsupply.com/userfiles/file/vazuzajalexavi.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000130c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130C4 18180 bytes
SHA-256: fffafd657063be1fbd090dbecbc539f50ebdb2ef423df2b5226fb66f92f4646f
font_01_sfnt_off000160ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x160BA 10024 bytes
SHA-256: 5412405a0255da2d78939a98a6966387d8fb8308e07484dc7afca9471e0bb35a
font_02_sfnt_off00017714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17714 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00018f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18F22 10716 bytes
SHA-256: 0748bb7b59caf3265230d0d36d4f6635bcde602e4c6ea69be550843101bf3cb6

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