Malicious PDF — malware analysis report

Static analysis result for SHA-256 10ad2cd39f343851…

MALICIOUS

PDF

39.6 KB Authoring application: pstoedit
MD5: 208f519db70cbdedef30f5161c12966c SHA-1: edf4715ac198a26bca6f4ea69f61de4af82cc42a SHA-256: 10ad2cd39f34385118859e8474407659120eb60112a08aed177328b0841fbddb
152 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 hosted on various domains. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier further support its malicious nature.

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://sexualgames.org/uploads/1/3/0/5/130588668/6534267.pdf
    • http://stjvschool.org/uploads/1/3/0/6/130604699/mofidufos-welazoseres-xapajave-murux.pdf
    • http://usafachapters.org/uploads/1/3/0/3/130379158/dibasejodaj_mubane_loviguzumas_dejafumezopixu.pdf
    • http://mta-sts.drrichardarcher.com/uploads/1/3/0/6/130603948/jupanezimuvupiwer.pdf
    • http://ellabelleslime.com/uploads/1/3/0/4/130489168/1432407.pdf
    • http://www.850igator4x4.com/uploads/1/3/0/6/130621210/tekutolaxoxo.pdf
    • http://apbgprojects.com/uploads/1/3/0/5/130589320/2415957.pdf
    • http://nostalgist.net/uploads/1/3/0/5/130589078/josozuz.pdf
    • http://thehappyhedon.com/uploads/1/3/0/4/130490461/e0cd3d2f.pdf
    • http://evorapetsite.com/uploads/1/3/0/9/130969406/kotajirufe_gebirerutez_lifutiniripe.pdf
    • http://skycarcare.com/uploads/1/3/0/2/130291582/fufosedetuj-nomupesevu-rojedazawa.pdf
    • http://aivets2018.eu/uploads/1/3/0/4/130435531/1987900.pdf
    • http://financialliteracy101.net/uploads/1/3/0/5/130551880/rukowupej.pdf
    • http://hitfan.net/uploads/1/3/0/4/130483848/3805606.pdf
    • http://impactmesh.net/uploads/1/3/0/2/130272266/voleluzurugobat.pdf
    • http://antvalseminars.com/uploads/1/3/0/8/130873710/segagivamoxatipu.pdf
    • http://www.garymadeira.com/uploads/1/3/0/5/130588517/54ec59b1d2fa.pdf
    • http://mj2startups.com/uploads/1/3/0/4/130483616/natenado.pdf
    • http://www.westtowninc.com/uploads/1/3/0/8/130813646/6062280.pdf
    • http://mta-sts.mx.skylineprintings.com/uploads/1/3/0/5/130545001/130545001.html#advanced+nutrients+connoisseur+coco+bloom

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000039f5.bin
df513bf88f0ada333de77792601d0e24f57cb9fca6b761086faa8d42a4912e15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x39F5 8692 bytes

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