Malicious PDF — malware analysis report

Static analysis result for SHA-256 6553cc0436fc3949…

MALICIOUS

PDF

39.0 KB Authoring application: GIMP
MD5: a03bcc6fdbbeb9abe436faf0c8a52e8c SHA-1: f7f8678f61143e90995750bb7d9600f0406e1cf4 SHA-256: 6553cc0436fc3949da6622dffefffbec1695d323fefffa7f4def028f58b0a1f9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure disguised as a job application cover letter, which embeds a large number of external links to other PDF files. This behavior is indicative of a link farm or phishing campaign designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution.

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://batonrougehomeinspector.org/uploads/1/3/0/8/130874010/xujufetizagu_pawukaviregofi_rulurebe_bozukukijopi.pdf
    • http://www.allthewildrosesvintage.com/uploads/1/3/0/6/130603721/7349beef39300d5.pdf
    • http://mysafeheaven.com/uploads/1/3/0/5/130551677/8178965.pdf
    • http://lilahbazarte.com/uploads/1/3/0/5/130539227/659580d.pdf
    • http://michellevp.com/uploads/1/3/0/7/130775503/godevubumowub.pdf
    • http://bass4me.com/uploads/1/3/0/5/130542948/ginowonametu-sekiboxodogifa.pdf
    • http://keyspirereviews.com/uploads/1/3/0/6/130604013/7449687.pdf
    • http://medicinaevolutiva.com/uploads/1/3/0/8/130813524/54cbbd0.pdf
    • http://texassupercool.com/uploads/1/3/0/6/130604956/pofuk.pdf
    • http://padiacademysg.com/uploads/1/3/0/6/130620578/2356613.pdf
    • http://runsquadopo.org/uploads/1/3/0/5/130588145/wefumade.pdf
    • http://6c6f7665.org/uploads/1/3/0/8/130814636/lubiwifanenafotin.pdf
    • http://kickette.net/uploads/1/3/0/6/130620478/xuxitupot.pdf
    • http://dnatransfiguration.com/uploads/1/3/0/5/130550931/lafagarusajagu.pdf
    • http://soundoftheshoals.com/uploads/1/3/0/2/130274263/guwaludazidukawixu.pdf
    • http://langleycyberpatriot.org/uploads/1/3/0/5/130588378/kulazutaw-wenixoniliv-vekavat.pdf
    • http://motionalstudios.com/uploads/1/3/0/6/130639554/865902.pdf
    • http://mx.backinbalanceofgreenville.com/uploads/1/3/0/6/130603721/rimerilawakozu.pdf
    • http://skitaxi.ca/uploads/1/3/0/2/130273812/9687069.pdf
    • http://nomadic-chris.com/uploads/1/3/0/3/130379331/pegerelag_fulumejuga.pdf
    • http://bouncyballcatastrophe.com/uploads/1/3/0/6/130640225/3486306.pdf
    • http://jarturner.com/uploads/1/3/0/8/130814611/9109514.pdf
    • http://webdisk.maiawellnessstudio.com/uploads/1/3/0/7/130776409/5115709.pdf
    • http://keynoteconnections.com/uploads/1/3/0/2/130289096/814829.pdf
    • http://mail.eugenefriendsofjung.org/uploads/1/3/0/6/130604441/4e9c23b1.pdf
    • http://w6jsx.bpmtc.com/uploads/1/3/0/5/130590456/130590456.html#sample+cover+letter+for+manager+job

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033c6.bin
2eec0f012b280fd6171f61c94a6931a266632d20ba6f4f5c2215637b7867c7eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33C6 8008 bytes

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