Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2a11bf42a72b4e2…

MALICIOUS

PDF

41.3 KB Authoring application: pstoedit
MD5: 33f38292b8ef5b988c424d349f88767c SHA-1: a63657b123ad6694e37722c033c6957e5e5b1b5a SHA-256: b2a11bf42a72b4e26f9d3a312dbfc27c8ed8bbf7b7a2ea4a41891242c55fe98f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body text, though heavily obfuscated, mentions 'pstoedit' and 'Dead sea scrolls book pdf', which appears to be a lure.

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://www.fitnesswitness.com/uploads/1/3/0/8/130813305/vosakuzatedezetoxawi.pdf
    • http://apexlegendsskins.net/uploads/1/3/0/5/130589163/76ef1c2.pdf
    • http://swaffle.com/uploads/1/3/0/8/130813859/a5d5ade644a57.pdf
    • http://www.claireinlight.com/uploads/1/3/0/2/130291724/7bc55efd5735dd5.pdf
    • http://williamclegg.com/uploads/1/3/0/7/130740627/5972026.pdf
    • http://inshopper.site/uploads/1/3/0/5/130588278/muxinovakibawafi.pdf
    • http://carolinelizabethsavage.com/uploads/1/3/0/5/130588344/gopatagaketuralu.pdf
    • http://experienceperfectwindows.com/uploads/1/3/0/8/130814083/jijabibev.pdf
    • http://mi-12ventures.com/uploads/1/3/0/6/130621367/pogekazabole_gegazulafabari_roluzemusijina_lewedo.pdf
    • http://ratemylawyers.com/uploads/1/3/0/6/130639363/9214491.pdf
    • http://nutrinian.org/uploads/1/3/0/6/130639282/d599f378.pdf
    • http://shoebrewnation.com/uploads/1/3/0/2/130288426/3c921a0.pdf
    • http://mosquitosaregone.com/uploads/1/3/0/5/130588796/rirefelogib.pdf
    • http://ip115-colo.mnemonix.com/uploads/1/3/0/4/130483864/fakipifetusa.pdf
    • http://101travelphotos.com/uploads/1/3/0/2/130289154/zesagof.pdf
    • http://thepacketpusher.net/uploads/1/3/0/5/130589061/vikoliriwo-dafeti.pdf
    • http://millymop.co.uk/uploads/1/3/0/2/130272955/001a5ac814b2f76.pdf
    • http://galenetics.com/uploads/1/3/0/6/130620759/bewokejeg-jekoto.pdf
    • http://rainflowpro.com/uploads/1/3/0/4/130483276/892a826548.pdf
    • http://thedaydesigner.com/uploads/1/3/0/6/130620948/1219135.pdf
    • http://urbanshamanmagic.com/uploads/1/3/0/5/130540592/d7d002.pdf
    • http://adsl-63-204-18-8.benefitplans.org/uploads/1/3/0/5/130551684/130551684.html#dead+sea+scrolls+book+pdf
    • http://shoebrewnation.com/upl

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004225.bin
1bee4b1c02d6b7c15e1baf2c61862cb8e53ca66e54a7e8eb265ad528aff61f35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4225 7640 bytes

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