Malicious PDF — malware analysis report

Static analysis result for SHA-256 22ba6bea11d90b74…

MALICIOUS

PDF

28.3 KB Authoring application: Pdftk
MD5: f6806fce6f5e5cb74cf10c7a28945a08 SHA-1: f4eb2ccae471bafa8549d599395f9254ec6b955f SHA-256: 22ba6bea11d90b74ce6ed77d2c6f3697e38838568a6850c8390ad1e26e7d8af6
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files across various domains. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious payloads. The ClamAV detection and ML classifier strongly support its malicious nature. No scripts were extracted, but the primary attack pattern is the distribution of external links.

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://veterinarycompounding.net/uploads/1/3/0/5/130588435/283769.pdf
    • http://itemhustle.com/uploads/1/3/0/4/130488934/100477.pdf
    • http://designsacredgarden.com/uploads/1/3/0/3/130313484/6c6ba3.pdf
    • http://randomlyincoherent.com/uploads/1/3/0/5/130550690/4166812.pdf
    • http://geniuspath.ai/uploads/1/3/0/6/130621383/7528614.pdf
    • http://nsfwmugshop.com/uploads/1/3/0/5/130588922/wudedozokisupako.pdf
    • http://kidstoryworld.com/uploads/1/3/0/3/130312998/rujunipota.pdf
    • http://daygroupcompany.com/uploads/1/3/0/5/130588482/vesunuxas.pdf
    • http://uniquelyyourslandscapes.com/uploads/1/3/0/6/130603692/6118360.pdf
    • http://bayleighscloset.co/uploads/1/3/0/4/130436339/56141a24eb837d0.pdf
    • http://thebeautifulwomanjb.com/uploads/1/3/0/5/130551351/3655464.pdf
    • http://www.myforestgarden.net/uploads/1/3/0/6/130604903/gagugimujoxol_vixuv_pamezanadif.pdf
    • http://tesny.site/uploads/1/3/0/4/130435873/6002157.pdf
    • http://block1949-asu.com/uploads/1/3/0/2/130271068/130271068.html#mat+redman+abide+with+me

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000172b.bin
a91c9289507eef17306ecac8b6f992b4264ab633ec70ba3b8e5ee52aff509bb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x172B 7180 bytes

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