Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a2e524972e74bf9…

MALICIOUS

PDF

64.6 KB Created: 2020-11-10 18:40:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: bf6674909a88ed0c8803fe441042d9e0 SHA-1: 14feedc111424e711d3b09c1e476351ffc230ce9 SHA-256: 4a2e524972e74bf9071103828ae7aa1956a4a45ea3f04760c27b10d4a9a68b21
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier with high confidence. It contains an embedded URI pointing to a suspicious domain, traffnew.ru, which is likely used to host malicious content or redirect the user. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of the malicious URL and the detection signatures strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/123?keyword=the+price+is+right+flip+flop+2011 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377909/normal_5f8b159059017.pdfIn PDF document text
    • https://detasove.weebly.com/uploads/1/3/4/5/134594091/2561151.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f93266749d27.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/8256202.pdfIn PDF document text
    • https://bizavurodetilu.weebly.com/uploads/1/3/4/3/134391156/1019c252a03c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418574/normal_5fa69dbca257d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374953/normal_5f89cca1ab9f8.pdfIn PDF document text
    • https://zafimalomaw.weebly.com/uploads/1/3/4/4/134458932/49dc4f7265fc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d54d947-5b1f-4f2b-b84d-ce132483ca02/92268387008.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/725e1a86-b956-4dec-b0e3-5e4920a269a1/mesonafugok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7381f39e-8a06-4398-bcea-2e892a78ab44/30554759798.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01b5fb06-3cb7-4af0-b97a-655b9e13b991/nadal_vs_federer_live_stream_wimbledon.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_off0000bf38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF38 5340 bytes
SHA-256: fa1c0b9431c852d3c4a962b4d1f20fee5865d4527c1dfeec0eba05e78501e889
font_01_sfnt_off0000d172.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD172 10804 bytes
SHA-256: b9f13a9e2b6b67d201970e291fb2b56381646faba761a33bcc5c4f27c0333a93