Malicious PDF — malware analysis report

Static analysis result for SHA-256 db7353f9e95f4801…

MALICIOUS

PDF

36.9 KB Created: 2020-05-13 04:42:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-09
MD5: d258a93f1cb9fa73bec1d0e9d6ce40e5 SHA-1: 94f43bb8a9cea7f7ff3c4977ef0ac01211b7d3c6 SHA-256: db7353f9e95f4801c4e996620f84b790f0e28d3b288e437f5674ccebbbdfcb16
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to other PDF files. This behavior is indicative of a link farm or a method to distribute malicious content under the guise of legitimate documents. The ML classifier strongly flagged this PDF as malicious, supporting the suspicious link farm activity.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://gotrsummit.com/uploads/1/3/1/8/131856937/131856937.html#service+cloud+certification+exam+guide PDF link annotation
    • http://snowshovelmt.com/uploads/1/3/0/4/130436033/mafataxurut.pdfIn PDF document text
    • http://soundofmusicsenseofart.com/uploads/1/3/0/6/130604903/gasapazeteruduvorufe.pdfIn PDF document text
    • http://brittanyswales.com/uploads/1/3/0/4/130436152/0f8a5b94018.pdfIn PDF document text
    • http://wickedslushcloverdale.com/uploads/1/3/0/7/130738997/e212c885c3.pdfIn PDF document text
    • http://com-unlocked-valid-account.com/uploads/1/3/0/5/130589251/1732825.pdfIn PDF document text
    • http://solar-crm.net/uploads/1/3/0/6/130639055/8403660.pdfIn PDF document text
    • http://lancasterfair.org/uploads/1/3/1/3/131384536/kowugawinefa.pdfIn PDF document text
    • http://bizprepsolutions.com/uploads/1/3/0/9/130969264/rosez.pdfIn PDF document text
    • http://tobycovert.com/uploads/1/3/1/1/131163962/7675e67381a4b39.pdfIn PDF document text
    • http://suredoneservices.com/uploads/1/3/0/2/130287995/mizodupow.pdfIn PDF document text
    • http://dariussaffron.com/uploads/1/3/1/4/131408572/e37737b.pdfIn PDF document text
    • http://sesproperties.com/uploads/1/3/0/4/130478057/4128460.pdfIn PDF document text
    • http://acceleratesolution.com/uploads/1/3/0/6/130640126/70ddeca021d3d.pdfIn PDF document text
    • http://ljungmagazine.com/uploads/1/3/0/4/130483852/6897029.pdfIn PDF document text
    • http://nesoinc.com/uploads/1/3/0/5/130588813/4083268.pdfIn PDF document text
    • http://busheyparishcharity.org/uploads/1/3/0/6/130620631/dureforewuf_kofebatemesefo_xajunibidamez_nowojigebakid.pdfIn PDF document text
    • http://newheightsadventure.com/uploads/1/3/0/7/130739133/takawavogisonekuwe.pdfIn PDF document text
    • http://floridagungear.com/uploads/1/3/0/6/130639774/sosigote-jutavakube-bibezipe-wonaporajikez.pdfIn PDF document text
    • http://angelashemeshart.com/uploads/1/3/0/6/130603771/366b3.pdfIn PDF document text
    • http://mrochebeauty.com/uploads/1/3/0/5/130538862/382080.pdfIn PDF document text
    • http://learningagenda.org/uploads/1/3/0/5/130545333/jubusexujevofuxuseg.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 1

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_off00006576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6576 10000 bytes
SHA-256: 1eba0c1d57898f489c20d5d00a2f3af2e9600ea4cd1114f2ac361a60e38bbfbf

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