Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7dd0ff9a75f2464…

MALICIOUS

PDF

37.7 KB Authoring application: Pdftk
MD5: 37bb72303c78896afad0c55feb8ca9de SHA-1: 516323ddcac9a42ab239c6ff73be09749646ad68 SHA-256: e7dd0ff9a75f24649572c1482e380aa6c6987e92b1f5c4087db497b616fcc5d8
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique commonly used for link farming or redirecting users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, while containing garbled text, mentions 'Guild wars 2 crafting guide', suggesting a lure to disguise the malicious nature of the links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://amadorah.com/uploads/1/3/0/2/130272501/gixujegova.pdf
    • http://nationalartsclubaustralia.org/uploads/1/3/0/5/130540525/subopas.pdf
    • http://newmomcompany.com/uploads/1/3/0/2/130289681/1181495.pdf
    • http://orangecountybestwindowtinting.com/uploads/1/3/0/5/130588287/zevumowulodilud_bejolu.pdf
    • http://fortrancraft.com/uploads/1/3/0/5/130588489/bobedadofeta-tudakod-ponedolopit.pdf
    • http://drjamesworling.org/uploads/1/3/0/2/130270932/9ba94793e9.pdf
    • http://bigislandweddingplanner.net/uploads/1/3/0/2/130270951/refimunorofiv.pdf
    • http://nextpathfinance.org/uploads/1/3/0/6/130605315/d860f646e71.pdf
    • http://palmbeachhouserepair.com/uploads/1/3/0/5/130550911/130550911.html#guild+wars+2+crafting+guide

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011b2.bin
c880f9b698dfb36a710e64f7ba3579f810e57d9fd52c758931a671d2cb2d9eb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B2 7832 bytes

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