Malicious PDF — malware analysis report

Static analysis result for SHA-256 97f4ac4c2fe51918…

MALICIOUS

PDF

35.1 KB Created: 2020-04-15 06:39:45 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 26f3adf3d9557fb55421512a830fad9e SHA-1: 73401652762328f0c5404d93f2f53fa0f8e39f62 SHA-256: 97f4ac4c2fe519186e9a8d15ad8f63d359b73cc915e4f52572253939b9ad6cad
94 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier as malicious. It contains a large number of external links, many of which point to PDF files with numeric slugs, characteristic of a link farm or SEO manipulation tactic. The primary URL, http://theycallmefrida.com/uploads/1/3/1/3/131379268/131379268.html#mr+brahmachari+malayalam+movie+songs, suggests a lure related to movie songs to attract clicks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://theycallmefrida.com/uploads/1/3/1/3/131379268/131379268.html#mr+brahmachari+malayalam+movie+songs
    • http://nursingarmpillow.com/uploads/1/3/0/2/130272394/a228932.pdf
    • http://carterwestbound.com/uploads/1/3/1/3/131379743/sotozoxepuvigobiba.pdf
    • http://salvis-pupusas.com/uploads/1/3/0/8/130814173/noborodawo_fevopu.pdf
    • http://primadonnabeads.com/uploads/1/3/1/4/131453081/4231182.pdf
    • http://expandwellbeing.com/uploads/1/3/0/4/130435635/toxez.pdf
    • http://anameisterwriting.com/uploads/1/3/0/5/130551176/gevazavumotanif.pdf
    • http://mikedaledesign.com/uploads/1/3/1/4/131407995/7225485.pdf
    • http://ameetazul.com/uploads/1/3/0/8/130814187/8760d403ea28ea.pdf
    • http://mail.byboukje.nl/uploads/1/3/0/8/130873820/58a39991175.pdf
    • http://cheerfl.com/uploads/1/3/1/3/131382148/womelusajete-puloz-widamusovina-miwuzazig.pdf
    • http://expandwellbeing.com/uploads/1/3/0/4/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006109.bin
296599e516d306533ddf3eb288051b555072223505ab29e4364762777c5a041a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6109 8108 bytes

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