Malicious PDF — malware analysis report

Static analysis result for SHA-256 a35c4fd3d13c33d8…

MALICIOUS

PDF

33.6 KB Authoring application: pdf-parser
MD5: 876b1a6362f52641165ee03cdd358e93 SHA-1: ccaa99da98b07cb8b8e4d9f43c4836786f28ac4b SHA-256: a35c4fd3d13c33d8e884980cbc6b72fc2a0e3dc7d4aaf328b91a65fb58d494e0
120 Risk Score

Malware Insights

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

The PDF file exhibits a critical heuristic firing for a link farm, containing numerous external links. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' further supports a phishing or redirection-based attack. The embedded document body contains many URLs, reinforcing the link farm heuristic and suggesting the document's purpose is to lure users to external, potentially malicious, sites.

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://mozilla.github.com/pdf.js/build/pdf.js
    • http://hbo07.com/uploads/1/3/0/6/130604637/8069669.pdf
    • http://jarofthreads.com/uploads/1/3/0/3/130379590/8428385.pdf
    • http://beingsemprendedores.com/uploads/1/3/0/6/130603983/tigejuruzuzaxalare.pdf
    • http://coge.me/uploads/1/3/0/5/130551258/3145529.pdf
    • http://blasphemouslines.com/uploads/1/3/0/5/130550976/0b0b91880.pdf
    • http://madewithlasers.net/uploads/1/3/0/7/130739773/48e99fe3.pdf
    • http://zipics.net/uploads/1/3/0/5/130551103/mepexinalalab-bakaduzopetika.pdf
    • http://momhustleology.com/uploads/1/3/0/3/130313299/7648646.pdf
    • http://jacsmacdl.com/uploads/1/3/0/5/130540359/2308850.pdf
    • http://myjoepeezywear.com/uploads/1/3/0/4/130483138/zurevujen.pdf
    • http://adams-aardvarks.com/uploads/1/3/0/6/130604576/e70bf68c7f7.pdf
    • http://71-159-221-57.overtimefitness.com/uploads/1/3/0/8/130873849/130873849.html#javascript+convert+base64+string+to+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002a94.bin
db4b8a238a3946a4eb0a6be339ce77223f5c74951872abd4ddc2743d60deef1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A94 8480 bytes

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