Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc87521a4ce78cd6…

MALICIOUS

PDF

38.9 KB Created: 2020-05-16 04:23:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-07
MD5: 327c7d99ae87b862bc462cd19fb6cac9 SHA-1: dfa12444daca012d8a80e9b82aa921f6e5dfff77 SHA-256: fc87521a4ce78cd6e2547359c0f0b675ff29ee4e74a6b41f28d4d0548b370aa6
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: User Execution

The PDF document contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The 'Fake CAPTCHA' heuristic indicates the document's intent is to deceive the user into clicking these links, likely for phishing or malware distribution. No scripts were extracted, limiting further analysis of the payload delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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 http://afriquemediagroup.com/uploads/1/3/0/8/130814340/130814340.html#automation+anywhere+control+room+pdf PDF link annotation
    • http://customerpro.net/uploads/1/3/0/6/130605273/5237622.pdfIn PDF document text
    • http://sardiniacostaparadiso.com/uploads/1/3/1/3/131398447/suvuti-wamowe-lomabugujenonax-jalowonewus.pdfIn PDF document text
    • http://steamplayground.org/uploads/1/3/0/5/130543462/2caff6467ed8b5.pdfIn PDF document text
    • http://preciousservicellc.com/uploads/1/3/0/6/130604195/pebotabof.pdfIn PDF document text
    • http://ianmalone.com/uploads/1/3/0/2/130291350/ced691bc995d.pdfIn PDF document text
    • http://nicquiles.com/uploads/1/3/0/5/130550951/13f0dfe7935b79.pdfIn PDF document text
    • http://bubblesandbarscompany.com/uploads/1/3/1/6/131606472/0b4f78919c.pdfIn PDF document text
    • http://goldmedalsuccessconference.com/uploads/1/3/0/5/130588527/750662.pdfIn PDF document text
    • http://woodbrothers-creations.com/uploads/1/3/0/4/130483429/legakatigoz.pdfIn PDF document text
    • http://sondradorr.com/uploads/1/3/1/0/131071082/b92b4a3b16.pdfIn PDF document text
    • http://komercallc.com/uploads/1/3/0/7/130776592/magafejomokixoler.pdfIn PDF document text
    • http://tminz.net/uploads/1/3/0/5/130589416/janofizon_doderan_lixub.pdfIn PDF document text
    • http://empowerment-time.com/uploads/1/3/0/2/130273743/23714.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 4

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB6 10152 bytes
SHA-256: 8b517e3956c4da2ccd4833f477c974f30dbdb522153e5ed0366b4ad493c3c621

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