Malicious PDF — malware analysis report

Static analysis result for SHA-256 074c8675e96dc84b…

MALICIOUS

PDF

79.8 KB Created: 2021-07-03 09:17:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: a5da864a9fa1a7befceb9e6a73602a5d SHA-1: 2e923735f70c6d77c7d9457dd1b781bbd03e0ced SHA-256: 074c8675e96dc84b84273941b78a7c1f9ffacda7179d5f88c5f70fea0ea04776
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm or phishing lure. The presence of a 'tens 2500 instruction manual' URL and the 'SE_CALLBACK_LURE' heuristic indicate a potential scam or phishing attempt designed to trick users into visiting malicious sites. No scripts were extracted from this sample, but the overall structure and URL distribution strongly suggest a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=tens+2500+instruction+manual PDF link annotation
    • https://bawwabatrizq.com/userfiles/file/zeruzapotiruvejer.pdfIn PDF document text
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/d3qe7kpfa2jl8re06jk9nidgrh/73584161390.pdfIn PDF document text
    • https://clifestyle.net/uploades/userfiles/file/81655837379.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cdc6e398e8e---94955394585.pdfIn PDF document text
    • http://clintonseniorhighclassof77.com/clients/e/ec/ec6cde7faca09d53f5ba1fe44cd32e38/File/89454856662.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/d3d29b4a447086dcd06fc4b22a3dac3a/76770074196.pdfIn PDF document text
    • https://lightingsystemscol.com/wp-content/plugins/super-forms/uploads/php/files/5b06568f105e3e6a7eb20b3e5f06f60f/70104303782.pdfIn PDF document text
    • https://ideylia.fr/uploads/file/5420013901.pdfIn PDF document text
    • https://vnsteeldetailing.com/UserFiles/files/pinulajonenejekifesixir.pdfIn PDF document text
    • http://hilimall.ae/uploads/files/nogadavalabetujeximekixoj.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/796f61c3dfdf708d903329e6ff3c1dbe/23033981031.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/2c3f28b3440e116b5bad52e3798f06a6/bofivav.pdfIn PDF document text
    • http://travelshops.pl/userfiles/file/63454091495.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a9453b1dd04---pafutekowaxapope.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d49b4905af1---94863479512.pdfIn PDF document text
    • https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/lkhkkh45a6pknndmrrc8s3jv55/tasivodojifadopema.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/f36d122f5fafa88e701d613bfbc632df/51031757327.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd8147e22f9---dunebusupizimirudujarilod.pdfIn PDF document text
    • http://bydnjl.com/userfiles/files/31832899605.pdfIn PDF document text
    • http://amandamaitland.com/images/file/fusokolinug.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fc1539ab41---ziwofipeguwiluxomo.pdfIn PDF document text
    • http://johndanton.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/85639787949.pdfIn PDF document text
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/528b6b40bb0a729a19172ddcec2601a0/64355434369.pdfIn PDF document text
    • http://kiemtoanhaiphong.vn/upload/files/doxigemibigoliworili.pdfIn PDF document text
    • http://tiwtactic.com/userfiles/files/telepexisodibaxoze.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_off0000d263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD263 17852 bytes
SHA-256: 9097d37f04488ebbcadc01ac9d7a94f44fb7a7cad24dcc9cac2b35eb6b495ec8
font_01_sfnt_off0001009c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1009C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000118b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118B3 10832 bytes
SHA-256: 0d1d8389e5e6a754a5aa5dd4bb7f57c9b9f43ee9c9b92a6f0303e0f5df73526d

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