Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec2fb7ae24eec6b3…

MALICIOUS

PDF

131.6 KB Created: 2021-06-28 13:25:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 15918015bfcf7851c8976246c6b563e5 SHA-1: 0be1e7d0d9da395db818f36712e85ae27f8df8f7 SHA-256: ec2fb7ae24eec6b31e25ffed4539e6b313020a10b348257cf35bde9224e8ee02
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The ML classifier and advance-fee scam heuristics strongly indicate malicious intent. The document functions as a lure, directing users to download further malicious PDFs from a variety of compromised websites and disposable hosting. The embedded URLs are the primary indicators of compromise, facilitating the delivery of the malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

Heuristics 5

  • 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 http://transsnabstroy.com/userfiles/file/sovepitudoj.pdf In PDF document text
    • http://ampletrekking.com/userfiles/file/fimogefejamunefamez.pdfIn PDF document text
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16075352ff1c18---2130699993.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/0brsbhel8l10i4nrjdt0bacjkm/zupiwenilawujo.pdfIn PDF document text
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/03e60d554c43c472b1e8d3b3faf4ae60/82947743661.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/5fa43861c27706bded8dcb2c667285b9/juwuzu.pdfIn PDF document text
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/d4lk5qfav1ihsptfg8eldtogb4/womitonixerifadula.pdfIn PDF document text
    • https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/f7a123eaf2f7a6b50aba6742a773f37f/timabitezeneta.pdfIn PDF document text
    • http://lucann.com/Upload/file/mowezikabotijanesodetiju.pdfIn PDF document text
    • http://pc-driver.ru/userfiles/files/volememosemorojamaxinax.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/jtrbom4vuu3ghe3nn3aaqdv666/zuvinunukomeraluxirikom.pdfIn PDF document text
    • http://aircond.md/upload_fck/file/66406183495.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/490724adaa257d6e4c0aff8e468a2e96/golufazutuzebuxe.pdfIn PDF document text
    • http://szyuangang.com/UserFiles/file///bupaluw.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/953c7de74baf6c263e5efb8b4c960d0d/11596087233.pdfIn PDF document text
    • http://stardentalcare.org/userfiles/file/62057398712.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/68e4eb8812e23328bec9ef4b31486c59/tufeniwowafulagitu.pdfIn PDF document text
    • https://hirurgija.me//files/wafuguju.pdfIn PDF document text
    • http://dioceseofniranam.org/userfiles/file/69459682377.pdfIn PDF document text
    • http://xn--clinicaquirogavilario-vbc.com/wp-content/plugins/super-forms/uploads/php/files/82ts73716na9eungc718dalfr1/xaviwajovisinidav.pdfIn PDF document text
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/7746dd056b3bdbc1f49b9210f9e7b6fa/pawodikivifeku.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607401a18e36f---94311882953.pdfIn PDF document text
    • http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/pd6dbf91bcejt0k5uk1r0a57g8sk8ld1/93120047667.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096dd4a613a9---gegimudore.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=spongebob+two+thousand+years+laterPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a09b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A09B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001b8b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B8B2 11092 bytes
SHA-256: 7bee2752ddb790184134f8149f592d336534dd1f30480a0ae2d73102770c446b
font_02_sfnt_off0001d22b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D22B 17672 bytes
SHA-256: 73254ef5313d05a7f1b7dfcc5ad0d29b7257e26838be5dd74aa112ac2e2797a3