Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fa15580d054e4ee…

MALICIOUS

PDF

43.8 KB Authoring application: QPDF
MD5: 1b0d78e459d88d2e76a27b2295a655b5 SHA-1: f02dcd568e920e819c28e37e2adfea4dbcdadf93 SHA-256: 9fa15580d054e4ee14f592cc065abbd9b3a2cf97c191a014e8ae057efc50245e
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to external PDF files hosted on various domains. This behavior is characteristic of a link farm used to distribute malicious content or conduct phishing attacks. The ClamAV detection and ML classifier further support its malicious nature, identifying it as Pdf.Phishing.TtraffRobotInstall.

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://grupo-lusotec.com/uploads/1/3/0/7/130776655/domunugovuto-xunujajelozazow-seledubobabekog.pdf
    • http://synergysoundltd.com/uploads/1/3/0/5/130589101/jotokibesoritufox.pdf
    • http://kristaballington.com/uploads/1/3/0/8/130874119/8f409ecb5bf2773.pdf
    • http://host13.carmichaelnl.com/uploads/1/3/0/6/130604657/xijijusomewijave.pdf
    • http://danoboots.com/uploads/1/3/0/6/130621407/ratemawovuzoromir.pdf
    • http://theatreonyourdoorstep.com/uploads/1/3/0/7/130739028/gitigaxal-rijepodibij.pdf
    • http://mysitelive.org/uploads/1/3/0/5/130543170/jodexofegodowal-fipozajerafuj.pdf
    • http://cprheartlife.com/uploads/1/3/0/6/130603890/vejomomik.pdf
    • http://mta-sts.larikkyokai.com/uploads/1/3/0/4/130476065/5122191.pdf
    • http://www.randlebcmcredit.com/uploads/1/3/0/4/130435807/dd3dba0cc0.pdf
    • http://obsync.com/uploads/1/3/0/4/130475997/3786903.pdf
    • http://www.depositdefenders.com/uploads/1/3/0/4/130488811/7599931.pdf
    • http://subaccounting.com/uploads/1/3/0/9/130969897/zujilugu.pdf
    • http://tilevum.store/uploads/1/3/0/3/130313531/ninomufowefiso-xilulufo-towolijus.pdf
    • http://floydfx.com/uploads/1/3/0/4/130436339/boneti.pdf
    • http://mail.montenegromotel.com/uploads/1/3/0/7/130776065/8480886.pdf
    • http://www.whiskeywillowdesigns.com/uploads/1/3/0/6/130620460/293049.pdf
    • http://aammf.bpmtc.com/uploads/1/3/0/2/130289201/130289201.html#herbs+for+cyclic+vomiting+syndrome
    • http://danoboots.com/uploads/1/3/0/6

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fe5.bin
0e201cc4c93c0753a8a1131549620ad8f39fa655518252a28fe4d2ef9c0aeb93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FE5 7672 bytes

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