Malicious PDF — malware analysis report

Static analysis result for SHA-256 80220323ab48fc66…

MALICIOUS

PDF

34.5 KB Created: 2020-06-15 18:09:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c3282759e719215d7704ca83594367c9 SHA-1: 973c247bdf48c8f1ac56128fc2fb158a865ba12d SHA-256: 80220323ab48fc66c6e90e1e890d4b77e729e6b06fe8d4e2dc654ac6b8bef8b4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links to other PDF documents hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for potentially malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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 http://9mn3i.bpmtc.com/uploads/1/3/0/3/130323811/130323811.html#2011+form+8949+instructions+pdf PDF link annotation
    • http://ryan-armstrong.com/uploads/1/3/0/9/130969627/wuwerovitosadoxivu.pdfIn PDF document text
    • http://pixelsperinchs.org/uploads/1/3/0/6/130639192/nelagaxinaki_movijefurub.pdfIn PDF document text
    • http://xrevster.com/uploads/1/3/0/5/130539225/meviwanov-rexoxazikalap.pdfIn PDF document text
    • http://mail.yongintaekwondocollege.com/uploads/1/3/0/3/130313021/b35847140521c32.pdfIn PDF document text
    • http://fullyjess.com/uploads/1/3/0/2/130271077/0aa830ba11fef59.pdfIn PDF document text
    • http://smallbusinessadviceweek.com/uploads/1/3/0/7/130739944/9288500.pdfIn PDF document text
    • http://thriftstorehemet.com/uploads/1/3/1/8/131856772/4308687.pdfIn PDF document text
    • http://johnhdouglass.com/uploads/1/3/0/5/130543346/ronodezog.pdfIn PDF document text
    • http://3xa.undesirable.us/uploads/1/3/0/6/130639180/2292539.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 8

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_off00005c49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C49 10184 bytes
SHA-256: 2e85762e457fd58591b75dbe86a881987cd44a0f7eeea1e63e239cc7103666d4

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