Malicious PDF — malware analysis report

Static analysis result for SHA-256 47c97c0c882710ed…

MALICIOUS

PDF

60.3 KB Created: 2020-12-17 23:22:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: a4e6e0f8c2949bc1a398670c47316251 SHA-1: 5e9cd3183aeea31ff48e59732728820cc49f325b SHA-256: 47c97c0c882710ede78e82df9722b2e125c9249b0a5377154a004f6d4800a76e
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, many of which are likely part of a link farm designed to manipulate search engine results or direct users to malicious sites. The primary IOC is the URL 'https://traffset.ru/123?utm_term=backpack+blower+rack+for+truck+bed', which is likely used to redirect users to a phishing or malware distribution page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffset.ru/123?utm_term=backpack+blower+rack+for+truck+bed PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388619/normal_5f8e7dd0386d7.pdfIn PDF document text
    • https://dowamiwimeguv.weebly.com/uploads/1/3/0/7/130775936/ab738b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc587e7affbf90a6609e8ed/t/5fc667074e98326c02ed38c0/1606838023406/redakabasopawibiratukenoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d012df9-b11d-44ff-abb4-cf47df8d7dc9/pufokirewifesakubekoxek.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e93ce5c7695ca99badce/t/5fcc2b42c836a917f9fdc2d8/1607215942324/dixagexujuki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80477e61-5646-422a-b740-8ae74b115fa2/pidivoti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cde9baee-6da8-4859-a7cf-9853959fda1b/philasd_login_infinite_campus.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc68d526b97992eb5827da1/t/5fcab00951120475abc639b2/1607118860785/51316891802.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe13e24e98326c02d7dfe1/1606292451570/27676503418.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96873045-afd0-4a5b-9b2f-475e92c91c56/tarizu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc37d0aec917750a3e81c42/t/5fca3f9b9c93c058c48fcc80/1607090075805/18600940891.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d478aa55-2cfa-40bf-9c0c-e36c70aad384/vista_20p_installation_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcecc3225f96d1b32d21edb/t/5fd6eec7df2f0204c24af084/1607921352044/23046000422.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_off0000b0f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0F6 5316 bytes
SHA-256: 76cae3267aaa18441e0f0c5d9ae9408bb29c0f756bdf5c28b7ddd34e73926a0b
font_01_sfnt_off0000c327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC327 9840 bytes
SHA-256: adb09dfa5e8c559496a446de4e3213c4adfacbcc8650554efc1fdad124333b4d

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