Malicious PDF — malware analysis report

Static analysis result for SHA-256 f404c328ec056a5f…

MALICIOUS

PDF

37.5 KB Authoring application: Soda PDF
MD5: f4efdeaaa73d3272b2e3cfc34c4bcfe3 SHA-1: 166b3fa531c5188ac7ad95e6a3dc3c1ef0b165e4 SHA-256: f404c328ec056a5fe0f42415ed11a7ef772190bc3a69e3559ccf90f92cc50784
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, which is a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily corrupted, contains URLs that are consistent with the link farm heuristic, suggesting the primary goal is to redirect users to external, potentially malicious, sites.

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://robot-detective.com/uploads/1/3/0/5/130550750/3330775.pdf
    • http://sakura-pak.org/uploads/1/3/0/2/130271132/dijumidurofuj.pdf
    • http://rep-christ.com/uploads/1/3/0/7/130775268/2106691.pdf
    • http://mariageronimo.com/uploads/1/3/0/4/130435966/romavomivoga.pdf
    • http://mercedes-huff.com/uploads/1/3/0/5/130551656/fugubinivelelora.pdf
    • http://cannablissfest.com/uploads/1/3/0/6/130604465/sepes.pdf
    • http://casagallegaavenidas.com/uploads/1/3/0/4/130488565/kuzujo_bujamuluxepore.pdf
    • http://ajhollowayministries.com/uploads/1/3/0/6/130620834/fizodozelod_mokokef.pdf
    • http://nordium.net/uploads/1/3/0/5/130590637/3595881.pdf
    • http://treesofbaltimore.com/uploads/1/3/0/7/130775889/nagavi.pdf
    • http://replayrentals.net/uploads/1/3/0/5/130543588/1416174.pdf
    • http://racelandcr.com/uploads/1/3/0/2/130291539/riwajiboluj_sisamubure_rebuzesaw_doxugudolebimos.pdf
    • http://savelma.com/uploads/1/3/0/8/130873973/7fde292a92d9c9f.pdf
    • http://aewestart.com/uploads/1/3/0/6/130605258/fepazebujujorat-vipiwejobutu.pdf
    • http://raiseyouruxiq.com/uploads/1/3/0/6/130603941/mukokegosam.pdf
    • http://handsheartshugs.info/uploads/1/3/0/2/130272415/1829560.pdf
    • http://nickchaves.com/uploads/1/3/0/4/130490151/17b846efd8f.pdf
    • http://screenwriting.biz/uploads/1/3/0/2/130273735/81b19322a.pdf
    • http://ibuyelectronic.com/uploads/1/3/0/2/130287462/c3f31c7c15b.pdf
    • http://septictankpumpinggwinett.com/uploads/1/3/0/6/130640116/bc6c6a5aa8dc.pdf
    • http://ccweap.org/uploads/1/3/0/6/130621819/130621819.html#ata+thyroid+cancer+guidelines+2018+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000337a.bin
f1e518ab3f456b2e2734a84b305b922aa76fa301e69b0eb5b5faadcf1bcda653		 pdf-font-stream PDF embedded font (sfnt) at offset 0x337A 7904 bytes

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