Malicious PDF — malware analysis report

Static analysis result for SHA-256 f03ca6284a8eca64…

MALICIOUS

PDF

33.6 KB Authoring application: PDFBox
MD5: a839ca8079461aa5ad5f467016a6ab4d SHA-1: 3605ff7eaffedff7d68ccc05473c17b3b4e2e836 SHA-256: f03ca6284a8eca64fc25fa0d046414420a4e22d6250a93cb9d1021114792d22b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO poisoning or to distribute malware. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs suggest a phishing or malware distribution campaign, aiming to redirect users to potentially harmful content.

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://lil.russia-hot-devki.fun/uploads/2020/01/29/5622245.pdf
    • http://xoto.kinotani.icu/uploads/2020/01/27/walunikegiditeda.pdf
    • http://shearfantasy.biz/uploads/1/3/0/2/130289601/peberadudus_xuwikokubuje_visejudotav_fisis.pdf
    • http://nunuwu.eltarrodeheno.com/uploads/2020/01/27/pulekerozowe_tumavagevogo_jowexefutoxa_gasasisiteji.pdf
    • http://rejafutedi.oldi-dns-nix.info/uploads/2020/01/28/litejumenubow-futiwoxe-roxikepa-gumurosoxup.pdf
    • https://toxinagegiteluk.weebly.com/uploads/1/3/0/5/130551141/74b07cc7ef60462.pdf
    • https://botukiberep.weebly.com/uploads/1/3/0/2/130272616/resuma.pdf
    • http://baby-shar.ru/uploads/2020/01/27/nogoduzagevewim_wikomipu.pdf
    • http://pobodiki.raphaacupuncture.com/uploads/2020/01/27/5959941.pdf
    • http://suzeva.mywaycreative.art/uploads/2020/01/29/3245164.pdf
    • http://ujpofficial.com/uploads/1/3/0/6/130605390/malegusakaxelezotebu.pdf
    • https://zafuroma.weebly.com/uploads/1/3/0/5/130588581/485aa.pdf
    • http://lawofficesofpaulstanko.com/uploads/1/3/0/4/130489230/5674735.pdf
    • https://tezupeduw.weebly.com/uploads/1/3/0/3/130313307/tozapedoxuri.pdf
    • http://sam.help-tao.com/uploads/2020/01/27/3453161.pdf
    • https://rapiviwobefedes.weebly.com/uploads/1/3/0/4/130435544/7266288.pdf
    • http://lockyrkk.xyz/uploads/2020/01/27/9688987.pdf
    • http://gisiweni.onemagazin.ru/uploads/2020/01/29/68c1a0bb7.pdf
    • https://mekovedogezu.weebly.com/uploads/1/3/0/5/130539554/7106771.pdf
    • https://soromejerex.weebly.com/uploads/1/3/0/2/130272390/biritomu_duzagetukojoxug_pelizij.pdf
    • http://clearhomeuk.com/uploads/1/3/0/3/130379475/130379475.html#pfaff+138+threading

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015f5.bin
4b32f1c8e66765d948b154b3f83a8a4605437724b2b5a235c38ff5e848fec4ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15F5 7320 bytes

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