Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c3bcdd2ee15a90…

MALICIOUS

PDF

41.9 KB Authoring application: Karbon
MD5: 88f522429e44a15a20685ecb43036bbe SHA-1: 47e2e3034947b32890dade233de19a68ca1e7fd9 SHA-256: 63c3bcdd2ee15a904e34f1de25f7ce65faf25cd930e17ea7be5d2232740f3ffa
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to potentially harmful content, possibly as part of a phishing or malware distribution scheme.

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://ketskremas.com/uploads/1/3/0/5/130550985/jasopiwasaxenitenaze.pdf
    • http://bswheadworks.com/uploads/1/3/0/4/130476452/petuvigewese_fiwuwavosolelo_sobuxebi_gafifogigisifow.pdf
    • http://winchesterartmurals.com/uploads/1/3/0/2/130271087/zaran.pdf
    • http://shellkriterion.com/uploads/1/3/0/2/130273581/f54765.pdf
    • http://guiltypleasuredetroit.com/uploads/1/3/0/2/130289474/dedusebo.pdf
    • http://oregonphotoco.com/uploads/1/3/0/5/130588287/719217.pdf
    • https://tigapabux.weebly.com/uploads/1/3/0/5/130590714/dezudepurazoj.pdf
    • http://alicevictoriadesign.com/uploads/1/3/0/2/130270934/811274.pdf
    • http://artfultemptress.com/uploads/1/3/0/6/130621025/kofafadu.pdf
    • http://europeanfenestrationsystems.com/uploads/1/3/0/5/130589252/dusixed.pdf
    • http://talkwithjimmy.com/uploads/1/3/0/6/130621457/laxej_fezakezoj.pdf
    • http://zamo.chaika-yalta.com/uploads/2020/01/29/kitutade.pdf
    • http://reversemortgageinfocenter.net/uploads/1/3/0/6/130621383/pejixisi.pdf
    • http://wixipol.copyrightcontact-1000004839645.com/uploads/2020/01/28/rokobosifat_pufal_lanilafenitawev.pdf
    • http://ic-series.com/uploads/1/3/0/5/130541131/1f3eda.pdf
    • http://dianehulsejewelry.com/uploads/1/3/0/5/130544313/3866184.pdf
    • http://nyegirlboutique.com/uploads/1/3/0/4/130478347/zexonolonozepun.pdf
    • http://drashcraft.com/uploads/1/3/0/2/130270987/7181589.pdf
    • http://simuwojo.kanapes.net/uploads/2020/01/29/e3e89.pdf
    • http://rockingtheboat.net/uploads/1/3/0/5/130551623/potuzudezu-begetep.pdf
    • http://panajefitu.slepttava.xyz/uploads/2020/01/29/9663241.pdf
    • http://keelanpetterson.com/uploads/1/3/0/6/130621950/2226597.pdf
    • http://kuri.ecoopower.com/uploads/2020/01/28/1106781.pdf
    • http://wufe.moegnezdo.com/uploads/2020/01/27/dafegubotibirovibe.pdf
    • http://beautelui.com/uploads/2020/01/27/xamuruj.pdf
    • http://mynaturalhairspa.com/uploads/1/3/0/5/130545128/130545128.html#lungi+dance+video+song+tamil

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001783.bin
9ef51ce078cbd11c692ea586a897bfe4b11c3a45a1f3fddb07a205818b54cb6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1783 8408 bytes

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