Malicious PDF — malware analysis report

Static analysis result for SHA-256 b06d9af483e0224e…

MALICIOUS

PDF

68.8 KB Created: 2021-03-01 01:43:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d72b142bf16887e5bf69c639a5826c6c SHA-1: 59e1ece724ff2ea0ad39cf61a2cdcc17e7bf8d34 SHA-256: b06d9af483e0224ed37581bc1e6c88adea6ff631e09794470a96dca6ca615f2d
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. The document contains numerous external links, with one prominent URL pointing to a potential phishing site. The presence of MFA lure heuristics suggests an attempt to harvest credentials or session tokens.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://kuzutuzo.ru/strik?utm_term=sonicwall+tz+215+setup+manual PDF link annotation
    • http://tibetterrier.ru/aankhen_full_movie_mkvmbwmc.pdfIn PDF document text
    • https://binikefesomeb.weebly.com/uploads/1/3/5/3/135386190/e959026a86a73.pdfIn PDF document text
    • https://gorenusedom.weebly.com/uploads/1/3/5/3/135326887/8366301.pdfIn PDF document text
    • https://tudadakamoziv.weebly.com/uploads/1/3/4/5/134596668/542079.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389394/normal_5fdc9f2301fa3.pdfIn PDF document text
    • http://copyrightprivacy.site/xurobobexusuvoxiwegerjiw4.pdfIn PDF document text
    • https://wuliwedifa.weebly.com/uploads/1/3/4/7/134753749/sogogonedofedexebe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381964/normal_5fc8101147b48.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420454/normal_5fc7405802e99.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/jadudusujuje/besujig.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/forum_community_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/lalexuxotonumikowun.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/74105425143.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/pedapavotepujafi.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_off0000ce79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE79 5536 bytes
SHA-256: d964a6453a55d19ec1f8b1013cc5a0e90699a568576a3d46ad4cccba152db847
font_01_sfnt_off0000e165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE165 10780 bytes
SHA-256: 5a9a634e1a8910cb23d8d607fac907ee4b268bf66afe2f38521a32810dc933da

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