Malicious PDF — malware analysis report

Static analysis result for SHA-256 94f1ce61cacb9572…

MALICIOUS

PDF

38.1 KB Created: 2020-05-25 21:18:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2dbb31bc5e25ba3a8ee1597b89a2401e SHA-1: 7e9d5233a9ecb658e7f5763efd4d628ee214952e SHA-256: 94f1ce61cacb9572b838497f3249a510af54435824c36013b7d4038f2bc4478b
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are numerically or generically named PDF files hosted on various domains. The document body and heuristics indicate a lure related to 'driver downloads'. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves redirecting users to these external URLs, which likely host further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://74-123-79-59.mgwnet.com/uploads/1/3/1/3/131398509/131398509.html#d-+link+dwa-+182+driver
    • http://barbadiancanadians.com/uploads/1/3/0/4/130476563/gukawajudi.pdf
    • http://lephokastro.com/uploads/1/3/0/6/130604606/6464447.pdf
    • http://tatatocancer.com/uploads/1/3/0/3/130323277/numoze_gozug_jipepegi_lawibox.pdf
    • http://cutenesscovered.com/uploads/1/3/0/7/130739632/powiduzeseruvonawa.pdf
    • http://castrovalleylimo.org/uploads/1/3/0/9/130969931/dulijodime.pdf
    • http://startyoursomething.com/uploads/1/3/0/4/130435546/83e3b1.pdf
    • http://smallowlfilms.com/uploads/1/3/0/6/130640060/vuvibunetemagina.pdf
    • http://honeykosmetics.com/uploads/1/3/1/1/131163667/laginafakap.pdf
    • http://yinspiringyoga.com/uploads/1/3/1/6/131607110/94b7c3c9f.pdf
    • http://justincakessc.com/uploads/1/3/0/9/130969323/d8a74f01efcc.pdf
    • http://shadowsnetworkcod4.com/uploads/1/3/0/5/130541662/jademadilu_jipomunozuduxow_jibabetividivo.pdf
    • http://maverickmobilemechanic.com/uploads/1/3/0/2/130288630/5fbcaee.pdf
    • http://jurgsommer.com/uploads/1/3/0/6/130639583/xatopovaw_vafow_subulemifejogum_jekifexafut.pdf
    • http://beaverstatedentalequipment.com/uploads/1/3/1/3/131383977/nevukelajurus.pdf
    • http://ampacinternational.com/uploads/1/3/0/2/130273735/senagi.pdf
    • http://arttozen.org/uploads/1/3/1/8/131856065/pazafepi.pdf
    • http://vvenera.co/uploads/1/3/0/5/130588527/rudafulejede.pdf
    • http://evangeliointeractivo.com/uploads/1/3/0/7/130739404/vokenoneke.pdf
    • http://nursevisit.org/uploads/1/3/1/3/131381781/nesudidevubamesor.pdf
    • http://thevistasfinancing.com/uploads/1/3/0/2/130274371/dotizu.pdf
    • http://foodbooking.co.nz/uploads/1/3/2/3/132303240/6326017.pdf
    • http://abatre.com/uploads/1/3/1/3/131398374/lulixe.pdf
    • http://arceasternpanhanlde.org/uploads/1/3/0/7/130775965/9112883.pdf
    • http://cherohonkeechic.com/uploads/1/3/1/4/131453301/346df7fd96a0.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_off00005c33.bin
519404a6b957776d2b26120c32213db73d21c0e1cd05d75d08600eb62b964c25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C33 20672 bytes

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