Malicious PDF — malware analysis report

Static analysis result for SHA-256 db4709a6deeb2d9e…

MALICIOUS

PDF

42.1 KB Authoring application: QPDF
MD5: 980708c75f651374f2ba803c2d45c963 SHA-1: 02bb19a4c807b6701e66ca0b877512d070c171b3 SHA-256: db4709a6deeb2d9e8cb0d304eee8f94bd8c107b47113883beaf2062caca34977
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique often used for SEO manipulation or to redirect users to phishing or malware distribution sites. ClamAV identified this as Pdf.Phishing.TtraffRobotInstall, and the ML classifier also flagged it with high confidence. The embedded URLs are the primary IOCs.

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://lautbirubungalows.com/uploads/1/3/0/6/130604281/8692794.pdf
    • http://leadinlife.press/uploads/1/3/0/6/130639559/sasixuwij.pdf
    • http://gurudsdg.site/uploads/1/3/0/5/130544823/nozutupuxilet.pdf
    • http://lvdivers.com/uploads/1/3/0/6/130639307/mewotara.pdf
    • http://mikessportspage.com/uploads/1/3/0/7/130739449/logebofopaw-nijowasaxu-newaxot.pdf
    • http://shamusozmen.com/uploads/1/3/0/6/130603756/6438362.pdf
    • http://azhealthcomm.com/uploads/1/3/0/6/130604350/lafag_damewo.pdf
    • http://efmlufkintx.org/uploads/1/3/0/7/130738972/7199318.pdf
    • http://kirstencarabin.com/uploads/1/3/0/4/130483980/kizik.pdf
    • http://the-pampered-hare.com/uploads/1/3/0/6/130620888/8916234.pdf
    • http://flipcirco.com/uploads/1/3/0/7/130740186/ce561ac187457.pdf
    • http://acnightmarket.com/uploads/1/3/0/6/130620233/4631c.pdf
    • http://thedesigndevil.com/uploads/1/3/0/3/130379167/3110619.pdf
    • http://mail.eliasonfoundation.org/uploads/1/3/0/6/130639655/taxezazujiwixej_meziki_lodirovajupesas.pdf
    • http://sisu-soul.com/uploads/1/3/0/7/130740266/penag.pdf
    • http://tosslikeaboss.com/uploads/1/3/0/3/130323469/1246f01194c49.pdf
    • http://www.fatcityrocks.com/uploads/1/3/0/6/130604631/8e14088f38.pdf
    • http://www.missriskmedia.com/uploads/1/3/0/5/130539319/natipalaze.pdf
    • http://cecilyeiferle.com/uploads/1/3/0/4/130435945/130435945.html#convert+multipage+tiff+to+pdf+online+free

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046af.bin
9650399ae23ec82394d2479a9dd2f1df997c942b6d4694f91e234e16c603ec53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46AF 8292 bytes

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