Malicious PDF — malware analysis report

Static analysis result for SHA-256 f19a42a09b463812…

MALICIOUS

PDF

66.6 KB Created: 2020-12-01 16:56:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 852792da3c1cac5e9e441447c0437583 SHA-1: 96a640a338c1e12af5e2cc6443bd6cb91ca3445f SHA-256: f19a42a09b46381205fad47ebc0ad596276a5438e155b4c017c534b433bb9ee4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, a common tactic for SEO poisoning or directing users to malicious sites. The heuristic PDF_SEO_LINK_FARM indicates a large number of generated links, suggesting an attempt to manipulate search results or distribute malware. The embedded URL points to a suspicious domain, likely serving as a lure or a distribution point for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffnew.ru/123?utm_term=how+to+upload+blender+models+to+roblox PDF link annotation
    • https://melesosinipedo.weebly.com/uploads/1/3/4/4/134475371/96263430731db1.pdfIn PDF document text
    • https://dawiganolakegoz.weebly.com/uploads/1/3/4/3/134367714/butewukese.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/papopagegop.pdfIn PDF document text
    • https://nubojubixuxo.weebly.com/uploads/1/3/1/4/131410311/nonotanesajajabad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459054/normal_5fb3391be42cf.pdfIn PDF document text
    • https://gunobodupisar.weebly.com/uploads/1/3/4/6/134677737/7112889.pdfIn PDF document text
    • https://bosebekepomij.weebly.com/uploads/1/3/4/8/134870535/f05d0f8b5933e.pdfIn PDF document text
    • https://nolutoxut.weebly.com/uploads/1/3/4/6/134683805/ac94b0bb6b5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fokapikow/20324428824.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe2053173fb5383b6af3e1/1606295636333/facility_preventive_maintenance_checklist_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/78901439413.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfff689955c744b536924c/t/5fc146f8eaf37e3b64cb0a99/1606502136352/supernatural_power_book.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/suffolk_county_warrant_department.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/gta_san_andreas_cheats_file_free_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf6c6b3c6ccf69f357094e/1606380652413/forma_de_energia_electrica.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c83e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC83E 5368 bytes
SHA-256: b24b4564dc7abf290bc5246e1e51dec1f983274461761f4a0e6e3b2b8850295a
font_01_sfnt_off0000da70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA70 10300 bytes
SHA-256: 34af44442a2ae72520ae380fb41009b688f82d8087f26bbcc61838788dd00454

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