Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d79df76e4c64335…

MALICIOUS

PDF

32.6 KB Authoring application: pstoedit
MD5: 7a4a804b97cd19e0ae4699fc3aadb4d4 SHA-1: c464fa09da9ab3031bfac0c3536fb2de8cfbdd71 SHA-256: 2d79df76e4c64335a428b491c04e5f0c7bf557de90ec8a3244ed1629fa459703
120 Risk Score

Malware Insights

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

The PDF file exhibits a critical heuristic for a link farm, containing numerous external links to other PDF files. This pattern is indicative of a phishing or malware distribution scheme, aiming to lure users to malicious sites or downloads. The ClamAV detection further supports its malicious nature, classifying it as Pdf.Phishing.TtraffRobotInstall. No scripts were extracted from this sample, but the sheer volume of linked PDFs strongly suggests a malicious intent to redirect users.

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://nhrealestate.org/uploads/1/3/0/7/130776735/wisefodejax.pdf
    • http://www.rachaelfulk.com/uploads/1/3/0/6/130620902/697022.pdf
    • http://nebraskasolarschools.net/uploads/1/3/0/7/130776887/torivoxuzafojowo.pdf
    • http://inmobiliariayome.com/uploads/1/3/0/4/130478882/pudatikolesit_dugozolekabus_labetidowoxamon_medatokunab.pdf
    • http://wakeforestfarmersmarket.org/uploads/1/3/0/4/130476678/lodeleforebadal-poxewemu-zuduvaludarelo-jivoxubisan.pdf
    • http://ricardocariaga.com/uploads/1/3/0/8/130873917/mesawerumu-povaf.pdf
    • http://bensonecrane.com/uploads/1/3/0/6/130605179/mupanasatajig.pdf
    • http://admin.apollotyresmanchester.co.uk/uploads/1/3/0/5/130588635/1878475.pdf
    • http://musiowskyed.com/uploads/1/3/0/3/130323455/lokirejusexib-pitoline-lemikak.pdf
    • http://nimehime.com/uploads/1/3/0/2/130288549/09948.pdf
    • http://restorativesolutions.nz/uploads/1/3/0/5/130551523/afd55c0d886a23.pdf
    • http://apartmentlocatorshomefinding.com/uploads/1/3/0/6/130621838/kidawejulenon.pdf
    • http://autodiscover.coprimag.com/uploads/1/3/0/3/130379252/130379252.html#elevated+serum+amylase+in+dogs

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000029f5.bin
b88fc33a47f96494b885622dbaeb7d2d63b471b606171f474233af0ddf8876d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x29F5 6820 bytes

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