Malicious PDF — malware analysis report

Static analysis result for SHA-256 296d6d3504ca618a…

MALICIOUS

PDF

80.6 KB Created: 2021-01-08 20:49:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 7351cdb54434ac8347cc772d9f291a90 SHA-1: 983c813213dc1e411245e765a8ee17420bf02943 SHA-256: 296d6d3504ca618ace5038c1e65bbded688df746772433b633d4e3f02da76719
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The embedded URL 'https://trafficel.ru/123?utm_term=papa%2527s+games+wingeria+hooda+math' is suspicious and likely leads to malicious content or phishing. ClamAV also detected this file as 'Pdf.Phishing.Trojan'. The presence of embedded PDF objects and the overall structure suggest an attempt to disguise malicious activity as legitimate content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafficel.ru/123?utm_term=papa%2527s+games+wingeria+hooda+math PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f889ddddf8a8.pdfIn PDF document text
    • https://tedomidile.weebly.com/uploads/1/3/2/7/132712102/tutitufu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486060/normal_5fe3975b69c31.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486350/normal_5fdf62f74ad0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393183/normal_5f92365f86084.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425484/normal_5fb87ab21c81c.pdfIn PDF document text
    • https://waxukazo.weebly.com/uploads/1/3/1/0/131071095/padoliwuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417426/normal_5f9b8c9392857.pdfIn PDF document text
    • https://cdn.sqhk.co/nanubebebot/gfERa68/vupinixusagabisuk.pdfIn PDF document text
    • https://cdn.sqhk.co/latipizi/iiGbljj/minecraft_mod_1._7_10_world_war_2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391001/normal_5fef601add547.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/tuxexi/rifafowiregorilora.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/turkey_roasting_guide_butterball.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/mowubixuvifakiwetenovu.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/camera_360_for_pc_laptop_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/74079923233.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_off0000f884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF884 5468 bytes
SHA-256: 006e00fad278683d633baf14973cf3f8176e94e26fe8dcc4155dfa5953d60f67
font_01_sfnt_off00010b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B06 12500 bytes
SHA-256: 3bd9cdd0c00229e65bf535547eb4d6728cbf42c7982575c4334309b435d7c4c2

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