Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ae9821d60971f01…

MALICIOUS

PDF

66.9 KB Created: 2020-11-18 02:14:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ff960745bfb27c59f2aa2f5ec7368ce5 SHA-1: 9276c5b2d252f3f11081246d8a7b199f10d2bcd0 SHA-256: 1ae9821d60971f0174bc3619afa607b3a727b76b80307c60b38dba66fb6af31f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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 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://trafffi.ru/strik?utm_term=jabra+sound+app+activation+code PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415052/normal_5f960e20ca0a0.pdfIn PDF document text
    • https://juzolafer.weebly.com/uploads/1/3/4/3/134382033/mifetubuxo.pdfIn PDF document text
    • https://tuvonozesafuk.weebly.com/uploads/1/3/4/6/134600303/pusugazofanu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385631/normal_5fb27c0e3969e.pdfIn PDF document text
    • https://mejulima.weebly.com/uploads/1/3/4/0/134040536/7901277.pdfIn PDF document text
    • https://wojowoseda.weebly.com/uploads/1/3/4/2/134266381/101644.pdfIn PDF document text
    • https://xazojitov.weebly.com/uploads/1/3/1/4/131408465/301de4db5cf050.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495264/normal_5fad99e7c7a9d.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/jamokaroxoj/30931056608.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bf313bd-b8cc-420f-ba82-0fbe75d61d0c/jexifaxajut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6064f3f9-2652-4e1a-a103-a915e554562c/navukotukolopava.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/gta_v_map_addon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbfa34d4-e1ef-491c-8c68-3d07e11c4e71/mevigasuvobakasavarid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c3f5262-51ed-4b86-9f27-f4df59cb351b/multipliers_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0a84b15-42dc-4f8b-b477-f80a2aa35a1f/nunuduwodopi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44f4f791-578e-4a18-b7c2-45a8161a8947/pumipifaxidejumolevelamuv.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_off0000c907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC907 5224 bytes
SHA-256: 1dc2455a2bdf58a054863bbde16ebf9cce3be9f762ed58bff7336864ace4a1b4
font_01_sfnt_off0000dadb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDADB 10484 bytes
SHA-256: f2a6de4a25491560ecf7121e9bfb0b829b125aa21d273bc30d3d6a01e3991487

Open this report in the interactive analyzer, or submit your own file for analysis.