Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa68d0e25c6a2da2…

MALICIOUS

PDF

39.4 KB Created: 2020-03-15 02:16:11 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: e791dd664d8adf67f85a0155a76c07f2 SHA-1: ea955ab1fcc42ddce0b0be45e45dbf3eb150c05c SHA-256: aa68d0e25c6a2da2ec5913df870b74b086086172e25d5b32fe129401578926a4
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to a 'Silk browser video format not supported' error, which is a common tactic to trick users into clicking malicious links. The document exhibits characteristics of an advance-fee scam, with numerous links pointing to external PDF files hosted on various domains. These links likely lead to further stages of the attack, such as phishing pages or malware downloads.

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://host25.carmichaelnl.com/uploads/1/3/0/5/130551006/130551006.html#silk+browser+video+format+not+supported PDF link annotation
    • http://psicolo.net/uploads/1/3/0/5/130588256/tuviwo_motewawaru_texanagewugaji_wasadaso.pdfIn PDF document text
    • http://jlcigars.com/uploads/1/3/0/7/130739480/bixeje.pdfIn PDF document text
    • http://endthedust.com/uploads/1/3/0/5/130540049/579dd5.pdfIn PDF document text
    • http://thehairshoppehinton.com/uploads/1/3/0/2/130289431/pibojen-nukubojonujo-butuzali-geroluvusumit.pdfIn PDF document text
    • http://www.tlpcookiedough.com/uploads/1/3/0/3/130323520/fe9d0ffa97.pdfIn PDF document text
    • http://etheniapolias.com/uploads/1/3/0/6/130604109/3522218.pdfIn PDF document text
    • http://www.fscreditservices.com/uploads/1/3/0/6/130640028/17068684a1cd3.pdfIn PDF document text
    • http://nashvillefoodandfun.com/uploads/1/3/0/5/130550770/920809.pdfIn PDF document text
    • http://1989raiders.com/uploads/1/3/0/6/130621965/611c729e.pdfIn PDF document text
    • http://mail.marthaattema.com/uploads/1/3/0/9/130969226/gudedekuxemazaf.pdfIn PDF document text
    • http://jij.net/uploads/1/3/0/6/130640052/0ad9aca62a.pdfIn PDF document text
    • http://nickclayton.sexy/uploads/1/3/0/4/130492038/5217397.pdfIn PDF document text
    • http://molecularsupplements.com/uploads/1/3/0/6/130620746/2f1f5558f.pdfIn PDF document text
    • http://driversboost.com/uploads/1/3/0/5/130551405/2127714.pdfIn PDF document text
    • http://davidbabaii.com/uploads/1/3/0/2/130271128/natebojiba.pdfIn PDF document text
    • http://bocaifengyun.br3h.com/uploads/1/3/0/7/130776677/temeluruj_sezoxelilet_vawifa_xegovonododi.pdfIn PDF document text
    • http://friendsofnjsoc.com/uploads/1/3/0/7/130739492/72335.pdfIn PDF document text
    • http://www.cams-collection.com/uploads/1/3/0/7/130739476/0bd460e80eef8.pdfIn PDF document text
    • http://dmscodes.com/uploads/1/3/0/7/130775198/b769ff1679ab69.pdfIn PDF document text
    • http://itsnotyouitsthebook.com/uploads/1/3/0/6/130621607/44c77c6d.pdfIn PDF document text
    • http://www.amandacollins.com.au/uploads/1/3/0/6/130640022/rorela.pdfIn PDF document text
    • http://spiritjourney.org/uploads/1/3/0/4/130435670/zorovuz-pojowuno.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

Related samples 3

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_off00007083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7083 7536 bytes
SHA-256: 306c2b20e42b9919352a2afe41421b077707d9878842b6f5521b7d803d70f579

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