Malicious PDF — malware analysis report

Static analysis result for SHA-256 126d58173b721150…

MALICIOUS

PDF

35.8 KB Authoring application: Pdftk
MD5: 51e7d3d880144b788732c33caa5c336d SHA-1: 7192b6173f4895e236d9cbad5ff845e51fed3fc9 SHA-256: 126d58173b721150b7097dfa9e8829c411167624de3d0a7a7b89acaac41abc32
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded URLs pointing to other PDF documents, a technique often used for SEO spam or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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://alksuperiornetworks.com/uploads/1/3/0/8/130873976/lagipavep-dixuj.pdf
    • http://dickwoody.com/uploads/1/3/0/5/130590777/004db3d802e.pdf
    • http://amerineheatingandcooling.com/uploads/1/3/0/6/130604723/solag-fudufudasob-rilatoj.pdf
    • http://camptishomingo.org/uploads/1/3/0/2/130270768/banulomisi_lixugaweg.pdf
    • http://campuscircle.org/uploads/1/3/0/2/130270904/63446516ba44d.pdf
    • http://accidentalsocialworker.com/uploads/1/3/0/7/130740090/93bd8.pdf
    • http://texasplanetsub.com/uploads/1/3/0/6/130621569/d3422a5d.pdf
    • http://xowf.com/uploads/1/3/0/5/130538939/2e4a1564.pdf
    • http://nashvillefoodandfun.com/uploads/1/3/0/2/130287960/307146.pdf
    • http://refinishedcabinets.com/uploads/1/3/0/5/130588151/jowagus.pdf
    • http://www.aahypnotherapy.com/uploads/1/3/0/8/130814479/mexepokelizipox-senozodeno.pdf
    • http://carpetcleancary.com/uploads/1/3/0/5/130588872/503126.pdf
    • http://airporthistory.net/uploads/1/3/0/7/130740252/zipewigekegasud.pdf
    • http://zaraservice.com/uploads/1/3/0/7/130775902/warasatab.pdf
    • http://nhabatdongsan.com/uploads/1/3/0/2/130291545/peziwa.pdf
    • http://danceofthemagi.com/uploads/1/3/0/8/130814408/d5f057.pdf
    • http://sltahoehabitat.com/uploads/1/3/0/2/130288380/vefipo.pdf
    • http://upperdare.be/uploads/1/3/0/6/130605190/3819201.pdf
    • http://ciggysound.com/uploads/1/3/0/3/130313022/130313022.html#6th+pay+commission+pay+matrix+table+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f36.bin
e426e9fcb31c00c0db23702299412602444dd5c062847dcf12e12aa9aa44b66d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F36 7588 bytes

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