Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0cc5d6e82b147a1…

MALICIOUS

PDF

66.4 KB Created: 2020-11-18 20:32:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9676182e1a8f456db73643d8a6982797 SHA-1: ea2cb06c181391f3f1b7fe87697af69598d21608 SHA-256: b0cc5d6e82b147a165a81f1e93468af9acb221e8994168b53fcaf03153124561
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a clipboard-command (paste-and-run) lure. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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
  • 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/123?utm_term=ps3+av+cable+vs+hdmi In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383460/normal_5f960e5594342.pdfIn PDF document text
    • https://lewixixidofuj.weebly.com/uploads/1/3/4/3/134393564/zetirupifuwed_fuzuxejetebew_xomamufijod_gidalal.pdfIn PDF document text
    • https://darurirajilubi.weebly.com/uploads/1/3/4/3/134318819/gevef_remunukeron_gifagekobibuwod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481671/normal_5fa7c65a41e36.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/bokexizometun/57451605905.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/monica_guardian_property_management_naples_fl.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/mebogalesogivar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e94bf115-4206-4c02-8ec1-818b7a522a54/77609845608.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/second_amendment_morgantown.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/free_movies_2k_watch_online.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/catfish_farming_techniques.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/40882711949.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/kamasisobubepiwebu.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/74821246415.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4EA 5448 bytes
SHA-256: a8f60fa4215d2fbe8875c4a5e4997151f5a6319a6a3cc39e565c0d53f747d0b9
font_01_sfnt_off0000d74c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD74C 11116 bytes
SHA-256: ffdb05312991dae79d111becd952fc390e57f972d5ca9cd26f3fc5e9097738fb

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