Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e6effb78aca3ab5…

MALICIOUS

PDF

65.7 KB Created: 2020-11-18 08:21:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 54cb3dcbc6b6a1faed35cfb23b8d4a3d SHA-1: 2e9dbeb34e6575d2c7d3a2eb1fb17cf6b98bf4e4 SHA-256: 5e6effb78aca3ab5366ca965deb673422fbea2413186322e5ee8d6145f280905
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?utm_term=d%2526d+lizardfolk+stats'. ClamAV also detected the file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0'. The ML classifier strongly flagged this PDF as malicious. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, suggesting it's not intended for direct user reading but rather to host the malicious link.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/123?utm_term=d%2526d+lizardfolk+stats In PDF document text
    • https://cdn-cms.f-static.net/uploads/4416154/normal_5f97124f4fae0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459180/normal_5fb2b7f76dbba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450337/normal_5fadf6ee85c11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379601/normal_5f9661c096ff4.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/fakuguvil/deeded_rv_lots_tn.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/33965840307.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/answering_phone_jobs_from_home_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/suzeduselu/69400392064.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/woods_runner_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/557f4c1b-a90e-4e05-ac59-f3f7f7b25c70/lifomufesixezax.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/all_ultimate_flash_sonic_codes.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/kujubipaveju.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/zakogesesakufuwivuke.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/ielts_listening_answer_dreamtime_travel_agency.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/beowulf_last_battle_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/tecumseh_model_hmsk80_manual.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_off0000c930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC930 4156 bytes
SHA-256: d9d9eb8b5a67a8494ca5a9593d54773c41ba913a17cb426b52e0a193c0b11448
font_01_sfnt_off0000d75e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD75E 10296 bytes
SHA-256: 25271c10f83fd941fa17b58514be8024cd3ab171c2376428088ac1049a210af5

Open this report in the interactive analyzer, or submit your own file for analysis.