Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a9131ba0fb4fb84…

MALICIOUS

PDF

38.0 KB Authoring application: pdf-parser
MD5: d9f49342b5d6a53466e4688d7c56beaf SHA-1: 0f60fde56cd9de30bed8e8369642e4b01ff57625 SHA-256: 0a9131ba0fb4fb84046fb0e374c39180631f3ff42151bfc07138c283d2172dac
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically related to phishing or distributing unwanted content. The embedded links likely serve as a mechanism to direct users to malicious sites or further malicious documents.

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://victormorrowshow.com/uploads/1/3/0/6/130639143/1804571.pdf
    • http://paxalopeg.anonima-net.fun/uploads/2020/01/29/sonuripapovunib_dapoxep.pdf
    • http://coateschicken.com/uploads/1/3/0/5/130539735/4249938.pdf
    • http://vipeku.igirls.fun/uploads/2020/01/28/188797.pdf
    • http://teamthomason.net/uploads/1/3/0/3/130323092/tevulejap-sezujo-rabulorosovav-duruma.pdf
    • http://mindbodymovementarts.com/uploads/1/3/0/5/130543667/vevukepawukotalexufa.pdf
    • http://svus.org/uploads/1/3/0/5/130590538/519938.pdf
    • http://jow.najiyagalimova.com/uploads/2020/01/28/6134996.pdf
    • http://soborexo.hlfxdata.online/uploads/2020/01/29/dofenomiruwapinomazu.pdf
    • http://davidcarere.com/uploads/1/3/0/4/130435734/404a2c6f5e0cd1.pdf
    • http://creditfromhome.net/uploads/1/3/0/2/130289760/b6e8aec79617.pdf
    • http://beyondhillco.com/uploads/1/3/0/7/130739713/130739713.html#how+to+setup+tp+link+n750+as+access+point

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012ea.bin
c931380ee67e24aa498aa9fcd3ad1606038f408087f5a7e3d684d14c36b9b996		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12EA 7780 bytes

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