Malicious PDF — malware analysis report

Static analysis result for SHA-256 567942d60f3d063b…

MALICIOUS

PDF

47.5 KB Created: 2020-04-06 15:00:39 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 46ceef420629e0e6c57c5a8ed0b55955 SHA-1: 61181d2f88bfc76ae53c68e8768d9568de505284 SHA-256: 567942d60f3d063b3827d5449d837a072ebc86f990a25cb55b2fb352bf10a512
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to setting a watch time, but its primary function is to act as a link farm. It directs users to numerous external PDF files hosted on various domains, likely as a tactic to inflate search engine rankings or distribute malicious content indirectly. No scripts were extracted, and the document body itself is largely obfuscated, making the link farm the most prominent malicious behavior.

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://app-pof.com/uploads/1/3/0/6/130604195/130604195.html#how+to+set+the+time+on+casio+5081 PDF link annotation
    • http://ijmprojectmanagement.net/uploads/1/3/0/5/130590738/447599.pdfIn PDF document text
    • http://prose-by-any-other-name.com/uploads/1/3/0/4/130492441/2299977.pdfIn PDF document text
    • http://robertodesignhouse.com/uploads/1/3/0/6/130621217/7853711.pdfIn PDF document text
    • http://hoaconstruction-services.com/uploads/1/3/1/3/131383493/rafojib.pdfIn PDF document text
    • http://non-profit.space/uploads/1/3/0/3/130323210/luwidunivixiperaxa.pdfIn PDF document text
    • http://bellathevagablond.com/uploads/1/3/0/2/130273799/xepup_fiwukixa_vexovukorose_rabenufudi.pdfIn PDF document text
    • http://earthkween.net/uploads/1/3/0/5/130543813/da24597cbacc2d.pdfIn PDF document text
    • http://forgottenrr-rr.com/uploads/1/3/0/9/130969748/20c647cda35dde.pdfIn PDF document text
    • http://singhlab.org/uploads/1/3/0/5/130590305/zevukixi.pdfIn PDF document text
    • http://councilofmusiccreators.org/uploads/1/3/0/3/130323814/vovamaku.pdfIn PDF document text
    • http://momentum-solar.com/uploads/1/3/0/6/130621916/kigij.pdfIn PDF document text
    • http://pansyandivy.com/uploads/1/3/0/7/130776698/damumugapilamepunuj.pdfIn PDF document text
    • http://kinseyfire.com/uploads/1/3/0/7/130738555/2273872.pdfIn PDF document text
    • http://thekaywayonline.com/uploads/1/3/0/7/130739974/nosew-magexijoneke-roxerirowov-zimir.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 1

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_off00007a50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A50 7900 bytes
SHA-256: 4f83a79f2f6323de304c952c6c0fc1775ec08c360cdb6f897ffd4bfac651a0e7
font_01_sfnt_off0000991b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x991B 16296 bytes
SHA-256: 2461ddaaf9152b41882cdc78a1f77234db812efa80a0ba6c918ee4a7bd445345

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