Malicious PDF — malware analysis report

Static analysis result for SHA-256 9840c3928243b555…

MALICIOUS

PDF

39.0 KB Created: 2020-04-03 05:54:24 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: be2e9681b25c87adda5ab0deef6466da SHA-1: d9768a058614f19e72b9a2f324f000adb0ee8481 SHA-256: 9840c3928243b55525c536a4124212d8cd9b5764de602b97d9f6e1e38858a784
92 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary URL found is http://themastershopper.com/uploads/1/3/0/5/130539758/130539758.html#marley+stir+it+up+turntable+manual. The extensive link farm suggests a tactic to manipulate search engine results or to distribute malicious content across many domains. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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
  • 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://themastershopper.com/uploads/1/3/0/5/130539758/130539758.html#marley+stir+it+up+turntable+manual
    • http://merakiservices.org/uploads/1/3/0/7/130776747/puwunuvekatove_dokera_lufedu.pdf
    • http://artbyvivi.com/uploads/1/3/0/6/130621213/282468.pdf
    • http://ginger-bear-designs.com/uploads/1/3/0/6/130622116/7233de072.pdf
    • http://msacproperties.com/uploads/1/3/0/7/130776677/bagibavoto.pdf
    • http://morstargar.com/uploads/1/3/0/4/130483276/muxovexofikifet.pdf
    • http://whaleheadoceanfront.com/uploads/1/3/0/8/130874272/kupumasuwo-fowudedab-patub-rotiluxoxogeg.pdf
    • http://anacustomwoodworking.com/uploads/1/3/0/4/130489926/xomojoniv.pdf
    • http://livelovefashionblog.com/uploads/1/3/0/4/130477048/linubajukanelep-xiledapu-vivif-kaxebubowonemam.pdf
    • http://vriesea.com/uploads/1/3/1/0/131070476/fa2ed3e7d327589.pdf
    • http://hbu5308portfolio.com/uploads/1/3/1/4/131437657/jijobasadojanejozi.pdf
    • http://creativebycarla.com/uploads/1/3/0/6/130639599/labirexoju.pdf
    • http://tredilionpark.com/uploads/1/3/0/7/130776213/5987540.pdf
    • http://somaticacupuncture.com/uploads/1/3/1/3/131383839/perenifogap.pdf
    • http://notaryofnh.com/uploads/1/3/0/6/130620793/7512176.pdf
    • http://earthworksenvironmental.net/uploads/1/3/0/4/130476912/wozorapusol.pdf
    • http://burtonavenueunited.ca/uploads/1/3/1/3/131379914/fibew.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d8e.bin
6b5bcafc9379d9e1d9e707598aa7f45da56b8502fe3fe3d4e23f36fb2b94dfea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8E 8188 bytes

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