Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1e8a841c0bc8e2c…

MALICIOUS

PDF

45.1 KB Created: 2020-05-19 22:52:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d3599b99a523841873295e7de6491c5 SHA-1: d8d35dc9fe84a3c2cdd0542485a21e0af3d1c575 SHA-256: a1e8a841c0bc8e2cc4df6211ed35230607f924c94d7a214835b9c1fa583c2569
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of external links, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicated maliciousness. The primary attack pattern observed is the creation of a link farm, directing users to numerous other PDF files hosted across various domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://holanomadas.com/uploads/1/3/1/6/131606955/131606955.html#la+symphonie+pastorale+beethoven
    • http://bowhuntersjerky.com/uploads/1/3/0/5/130588513/nuwarixar_kusorafixebine_dorotapinex_fenerutubaz.pdf
    • http://spectralgrow.com/uploads/1/3/0/7/130738850/4927838.pdf
    • http://jupiterfunds.com/uploads/1/3/0/8/130814337/1596211.pdf
    • http://douglasmcferran.com/uploads/1/3/0/3/130379379/8963149.pdf
    • http://russellhcarter.com/uploads/1/3/0/7/130739696/bafalusazimudo_gizujonusiwogos_bavunufitafon_xitajodexelu.pdf
    • http://clearmynameva.com/uploads/1/3/1/4/131407890/982043.pdf
    • http://skylineelectricalmn.com/uploads/1/3/0/6/130621829/437587b87a.pdf
    • http://cooperativeink.com/uploads/1/3/0/9/130969335/tiguwosawewamo.pdf
    • http://teamtaft.com/uploads/1/3/1/4/131406736/1206118.pdf
    • http://waybackmachineco.com/uploads/1/3/0/2/130270775/kavibiwuvedikap.pdf
    • http://houseofmooi.org/uploads/1/3/1/6/131606844/gawesazi-pudulokuzijul-tidijupixima-gazubitarogu.pdf
    • http://nlccpsw.org/uploads/1/3/1/3/131379021/zekasev-gejoduk.pdf
    • http://nanoquests.com/uploads/1/3/1/4/131452886/bb54ed9b86a8.pdf
    • http://kosherservices4u.com/uploads/1/3/0/2/130288603/4036597.pdf
    • http://forumporsche.com/uploads/1/3/0/3/130313378/8e5f9bb.pdf
    • http://algpharma.org/uploads/1/3/0/7/130740123/fukepogof.pdf
    • http://teresacombsphotography.com/uploads/1/3/0/9/130969817/0f6ce145.pdf
    • http://puppylovepetcarema.com/uploads/1/3/0/6/130621509/wutudigevezu_fabebik_pazivakobi.pdf
    • http://100firesmoto.com/uploads/1/3/1/3/131379042/kubax-puriwu.pdf
    • http://ualssa.com/uploads/1/3/1/8/131856415/diguvoro.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_off00007d72.bin
9f478d6cf6b360c3ad2c7b183bef08abbfce9a2f77cc3a6735272366628963d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D72 13528 bytes

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