Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f425e4a9d9f9d6e…

MALICIOUS

PDF

45.0 KB Authoring application: GIMP
MD5: 6b7fe06e7cfaf499e81397f8f0920fe2 SHA-1: 426441653e7c47942179361e316c5841bc3d7afe SHA-256: 7f425e4a9d9f9d6e2e8576aa8f0b304090dbd8fa8c0f51f841816443bfa7835c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious content. ClamAV identified this as Pdf.Phishing.TtraffRobotInstall, and a machine learning classifier also flagged it as malicious. The document body itself appears to be corrupted or contains obfuscated text related to educational materials, but the primary malicious activity is the link farm.

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.lilacsalonandspa.com/uploads/1/3/0/3/130379527/gidixepot-pakawom-rexaxerigarege.pdf
    • http://footcentersofnorthcarolina.com/uploads/1/3/0/3/130313525/gefugimasu.pdf
    • http://perfectlg.org/uploads/1/3/0/6/130639835/foxogor.pdf
    • http://artandcrafthouse.com/uploads/1/3/0/7/130739772/kitovak-rowupiguti-kibefumowoz-jerozemoben.pdf
    • http://morgane-claudine-laurent.com/uploads/1/3/0/2/130289595/ronilazotiwow.pdf
    • http://ptolemarch.net/uploads/1/3/0/5/130590608/803479ed15e.pdf
    • http://jleon.co/uploads/1/3/0/4/130483678/jepenadilila.pdf
    • http://tessapaige.net/uploads/1/3/0/5/130590157/jimitedolinevutet.pdf
    • http://brandingfaithdesigns.com/uploads/1/3/0/8/130813373/76e30de76f.pdf
    • http://mta-sts.mail.dbs-agencia.com/uploads/1/3/0/6/130640111/nepefovapog_rikixiz_raxakojeka.pdf
    • http://alanjbesquin.com/uploads/1/3/0/6/130605078/gebezo_gifisuvon_gagefimexaxawom_misixopewu.pdf
    • http://mingaeducation.com/uploads/1/3/0/7/130739944/pugiwusufaro.pdf
    • http://mollyhollingsworth.com/uploads/1/3/0/6/130639980/51c145493.pdf
    • http://depatos.shop/uploads/1/3/0/8/130873923/kupuwetigurulopofu.pdf
    • http://www.woodnwhiskeymke.com/uploads/1/3/0/3/130313091/0000687aa5f4c7e.pdf
    • http://s0b2b.slpny.com/uploads/1/3/0/9/130969673/130969673.html#possessive+pronouns+and+adjectives+activities
    • http://ogino-mpe-lab.dana-farber.org/uploads/1/3/0/5/130538992/nefatibaxewupokaja.pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003a43.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3A43 16036 bytes
font_01_sfnt_off000051b5.bin
8b88c1dbbdbdac8331c4d6bb6753d6ed0391b2394f17a81e7e5e99cfefb7c744		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51B5 8744 bytes

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