Malicious PDF — malware analysis report

Static analysis result for SHA-256 e70839b10ed8beaa…

MALICIOUS

PDF

69.1 KB Created: 2020-12-14 08:31:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 98c81fecf41fc3e3568b4883fbda415e SHA-1: 19fc7dc51de9194ad360fea01156ba59951bcd6f SHA-256: e70839b10ed8beaacf4ad9e76023d652994abc924d7882e57d5d4acd7ad7377f
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ML classification and ClamAV, as malicious. It contains a large number of external links, with one prominent URL pointing to 'traffnew.ru', suggesting a phishing or malware distribution attempt. The PDF structure and embedded content indicate it's designed to appear as a search result for a book, likely to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/123?utm_term=a+brief+history+of+western+philosophy+kenny+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4371553/normal_5f910a49d1de5.pdfIn PDF document text
    • https://doritader.weebly.com/uploads/1/3/4/8/134885844/3898897.pdfIn PDF document text
    • https://bipakevulof.weebly.com/uploads/1/3/4/6/134602937/sejumekubalukebe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384817/normal_5fbf2cea5b097.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491670/normal_5fa9de9f86dc8.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/sazixipame/emporer_wudi_of_han.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/konar_tamil_guide_for_class_8.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd258d2ae44b548da60dc2/1606231438407/west_haven_train_station_to_yankee_stadium.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/comment_fusionner_des_foxit.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc79748a4d75e5252f58d01/t/5fd021133364176a1250dbe2/1607475476578/jutotijinonewesakuxode.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/kali_amman_tamil_songs_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fd9af9866f3fd2d4d777/t/5fc343746457125654a595a0/1606632308305/the_sacred_art_of_listening.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/zisatepudofowa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc36d523dfdd95b60e52950/t/5fc9296098f8860e339e60fa/1607018854820/ledit.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4fd83485235c86bcf03c/1606373337008/kuzeruzim.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_off0000d322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD322 5304 bytes
SHA-256: 26473193dd67838a728d21d213dca840ecfc2077fb1f703b29ed51b7385b6851
font_01_sfnt_off0000e53a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE53A 10096 bytes
SHA-256: c47b896b776c5d17cc0676717f8996ac95d7cce5c88f32d99f05384b09112650

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