Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ed3e9d0898b1a87…

MALICIOUS

PDF

117.8 KB Created: 2020-11-20 23:43:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a34e231bd4ac0a9afa4df7eefa99571 SHA-1: dc6346d5444bfc9096eaee82bed82287c3163506 SHA-256: 0ed3e9d0898b1a873ac108471eb9f777fa2079a2202f4171ae37b8e3f98b3d97
156 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating high maliciousness. The presence of a large number of external links, including one pointing to 'traffnew.ru', suggests a phishing or link-farming attempt. While no scripts were explicitly extracted, the PDF structure and link farm heuristic indicate it is designed to redirect users to malicious sites, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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/aws?utm_term=batman+begins+2005+movie
    • https://ruwadegefanum.weebly.com/uploads/1/3/4/1/134108857/af3a2940.pdf
    • https://cdn-cms.f-static.net/uploads/4378160/normal_5f9b1eb29bee8.pdf
    • https://cdn-cms.f-static.net/uploads/4377656/normal_5f8eae3675428.pdf
    • https://cdn-cms.f-static.net/uploads/4425917/normal_5f9db58ded34a.pdf
    • https://refanoripusegu.weebly.com/uploads/1/3/4/3/134306014/200935.pdf
    • https://cdn-cms.f-static.net/uploads/4376858/normal_5f8b71e801e90.pdf
    • https://folukufisika.weebly.com/uploads/1/3/1/3/131384255/1548407.pdf
    • https://cdn-cms.f-static.net/uploads/4408589/normal_5f9d6c412edce.pdf
    • https://cdn-cms.f-static.net/uploads/4366982/normal_5f927ab0d3432.pdf
    • https://ranemexamegen.weebly.com/uploads/1/3/4/4/134440137/0ccc92260d14a.pdf
    • https://cdn-cms.f-static.net/uploads/4409246/normal_5fa0baf9bafcf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/04349fed-7152-4fb4-8212-6bed58242f14/mobimeet.ru__java.pdf
    • https://uploads.strikinglycdn.com/files/b9b53849-4d6b-4d99-96be-a769ebbf5b7e/96893356152.pdf
    • https://uploads.strikinglycdn.com/files/a8eb8910-bc2c-4de7-9d87-2f6b4bbdda8b/95966631179.pdf
    • https://uploads.strikinglycdn.com/files/2fc5df4f-8047-4183-8ce3-cfe7d046e1e7/wumaponas.pdf
    • https://uploads.strikinglycdn.com/files/3b25ab00-52ec-4eb1-87b8-ee921e1f69f1/9849321302.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000183fa.bin
ba9dd86ad06677ef82b9fc66565cbe1db364e5caa8fb73f24ce3e10b7ab9a08b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x183FA 2960 bytes
font_01_sfnt_off00018e7d.bin
f9d6928a30b217ec908863099361cc2d2de41bbd1f4d752a1aa36d8161d03726		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18E7D 5524 bytes
font_02_sfnt_off0001a148.bin
073e7e0a1807a6e4467d0d52e0cfd7ca9c89e400d84ef47de133ef5f9e7b5768		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A148 12032 bytes

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