Malicious PDF — malware analysis report

Static analysis result for SHA-256 f242026b6e919cf0…

MALICIOUS

PDF

72.6 KB Created: 2020-12-27 14:44:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 314ce60248cf3c7a085c94ee82de894f SHA-1: 21cf7da87fd641c18cd92e6956ae1d3d603327e3 SHA-256: f242026b6e919cf03cabf7a7305e225c56daf6d1acb7ca6b26ef6cbcd7ddee8e
294 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains numerous links to external PDF files, many of which are likely part of a link farm designed to improve search engine rankings for malicious content. One prominent URL, 'https://traffmen.ru/strik?utm_term=hp+microserver+remote+access+card+reset+password', is identified as a malicious redirector. The document also exhibits heuristics related to clipboard command lures and password-protected archive lures, suggesting an attempt to trick the user into executing malicious code or handling encrypted payloads. No scripts were extracted, but the overall structure and heuristics point to a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://traffmen.ru/strik?utm_term=hp+microserver+remote+access+card+reset+password In PDF document text
    • https://cdn-cms.f-static.net/uploads/4486537/normal_5fb3a402591d4.pdfIn PDF document text
    • https://cdn.sqhk.co/zijikunu/gd69Y4I/sepegebiwabotaboliden.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460970/normal_5fbe06a76d9ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382429/normal_5fbbad99dd22d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405440/normal_5f9a0f4a29420.pdfIn PDF document text
    • https://mivosubewo.weebly.com/uploads/1/3/1/4/131407796/863cedcfba.pdfIn PDF document text
    • https://gupamawuma.weebly.com/uploads/1/3/4/6/134602371/kexexiva.pdfIn PDF document text
    • https://cdn.sqhk.co/jumifokujuje/hwihQhh/pico_iyer_ted_talk_youtube.pdfIn PDF document text
    • https://pudegubazamase.weebly.com/uploads/1/3/1/1/131163945/b7b545d2f0a5ef1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421061/normal_5fd7105029218.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8998414c-d816-403c-9153-aaf78f760f70/ranodose.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/vezulagigafe.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_off0000e0a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A9 5300 bytes
SHA-256: f6d78ceb1867363dc56eff3879b3ef2bc41251fad690da88816b0459b0859b69
font_01_sfnt_off0000f2a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A6 10284 bytes
SHA-256: ee3c07c6b6ad0aae73154fa37e6cef052bb318e4e59bf994142a91d47b3efff8

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