Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b5f9a9714a9a897…

MALICIOUS

PDF

80.0 KB Created: 2021-01-15 15:30:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f675c85886e37a350327613d1dc2d029 SHA-1: ec12f738ea1accbb1f65ba3561b17722a38b6274 SHA-256: 9b5f9a9714a9a8970e6ecb9ef4d01e0e6f1b4a16d244928e0752eaa633d0cb9b
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URI pointing to 'https://trafficel.ru/aws?utm_term=stupid+game+show+answers', which is likely part of a phishing or social engineering campaign. The document body, though heavily obfuscated, suggests a lure related to 'game show answers'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/aws?utm_term=stupid+game+show+answers PDF link annotation
    • https://site-1247010.mozfiles.com/files/1247010/453628637.pdfIn PDF document text
    • https://site-1178085.mozfiles.com/files/1178085/58321665799.pdfIn PDF document text
    • https://site-1177759.mozfiles.com/files/1177759/movie_titles_mla_format.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408701/normal_5fb69507af0bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366034/normal_5f89dd5e02c57.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476954/normal_5fc899d089f49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422640/normal_5fdc63a259755.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459469/normal_5fcbd75a53b1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378852/normal_5f8ba5d4864b8.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/bulikowexunepov/badlapur_all_songs_ming.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/business_flyer_templates_free_vector.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/gowudolaxodovo.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/bikers_kental_full_movie_hd.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_off0000fa71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA71 5536 bytes
SHA-256: d2360e4953bda5b1607e012e5a4db9727047462dfc99794c0c26facff682f759
font_01_sfnt_off00010d2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D2E 11160 bytes
SHA-256: 5e2b64942a979910d3e16cfce1dc47bb7d2ee3b158488e15a822baba1afb194d