Malicious PDF — malware analysis report

Static analysis result for SHA-256 50aedfcf30ec6b23…

MALICIOUS

PDF

40.4 KB Authoring application: QPDF
MD5: b705c1eb4626fbc0c6585e075193a570 SHA-1: a44d8fa366f5ad099165c6eedbde4347937af3d8 SHA-256: 50aedfcf30ec6b23e39f7c909a9c9a7945d840c92c25be2ffb3a9aec2ce892f5
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious content. The primary indicator is the presence of a large number of external links, identified as a 'PDF_SEO_LINK_FARM'. These links likely serve as a lure to redirect users to malicious sites, consistent with phishing or malware distribution campaigns. No scripts were extracted from this sample.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://mohitk.weebly.com/uploads/1/3/0/4/130488371/ruwapev_difudokobo_fogusavagufubew_kuwabofa.pdf
    • http://qor.kz/uploads/1/3/0/5/130544034/1c247a8713.pdf
    • http://tateglass.com/uploads/1/3/0/6/130621947/86bdc8b.pdf
    • http://gsgfineart.com/uploads/1/3/0/4/130483303/boreginuvufisitebupa.pdf
    • http://mossfrogoutfitters.com/uploads/1/3/0/5/130543640/94bcfdab.pdf
    • http://natlseclj.org/uploads/1/3/0/7/130738859/sopejozir_pufelazibokave.pdf
    • http://foreverhereforyou.com/uploads/1/3/0/3/130323542/kuvowawuxeb-senogoguzux.pdf
    • http://camocarriers.com/uploads/1/3/0/6/130620897/d25e6.pdf
    • http://zelins.website/uploads/1/3/0/2/130272505/wizoz_xoxuvax_ramupakugevi_zibutibujuza.pdf
    • http://bartolomeilaw.com/uploads/1/3/0/7/130738950/130738950.html#cheat+gta+5+ps3+bahasa+indonesia+polisi+damai

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000129e.bin
1336ddf1e3b8396a374fff0922c08cbf1d194c54d6a49829d85eaf34f82abc44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129E 8904 bytes

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