Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5e8ad85b59ee8ea…

MALICIOUS

PDF

67.0 KB Authoring application: QPDF
MD5: 4d49d8fda44578294111ec68c68b7597 SHA-1: 82f7f35311edb1220e7e31331cda94946cd85d14 SHA-256: a5e8ad85b59ee8ea69fa6c513ac58d3fff3a8de166e0faaa04e8097b7ad8b58e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as detected by the PDF_SEO_LINK_FARM heuristic. This suggests a tactic to manipulate search engine results or to redirect users to potentially malicious content. The ClamAV detection further supports its malicious nature, identifying it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs are the primary IOCs, pointing to a network of domains hosting other PDF files.

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://circlecitytrade.com/uploads/1/3/0/5/130551341/8377762.pdf
    • http://www.hotspotz.shop/uploads/1/3/0/6/130605376/121100.pdf
    • http://residencebaiaverde.com/uploads/1/3/0/6/130620163/sevupodekupuwi.pdf
    • http://www.roman-accounting.com/uploads/1/3/0/7/130740213/kesomujifilu_wubetize.pdf
    • http://perfectionsyards.com/uploads/1/3/0/6/130604203/ziduzone.pdf
    • http://veterinarybusinessintelligence.com/uploads/1/3/0/6/130604752/5430770.pdf
    • http://pdvintage.com/uploads/1/3/0/7/130740489/xowurexivewon.pdf
    • http://tasteofmobile.com/uploads/1/3/0/2/130291415/vasazizomuzotef.pdf
    • http://nwm10.club/uploads/1/3/0/5/130550982/noxazos_wovenosizakiv_kulaz.pdf
    • http://networkmarketingphilippines.com/uploads/1/3/0/6/130620478/renujawur.pdf
    • http://readytoadopt.ca/uploads/1/3/0/5/130588266/7065653.pdf
    • http://www.toddlerztunez.com/uploads/1/3/0/8/130813428/1a4e5a4835.pdf
    • http://pleasurehouseva.gammaxiques.org/uploads/1/3/0/6/130640090/130640090.html#infection+caused+by+streptococcus+pyogenes

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000181e.bin
7efdcc8aa1f66f65c4c97c073987448bcf9d87cc79e037659d6f71345f0b662c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x181E 8008 bytes
font_01_sfnt_off0000cb04.bin
364a9861785c9eb38c2de8da1b42aa5f7d1d59d9f01e4c548e31ed1c850ec707		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB04 3284 bytes

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