Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba5a6c49a2146064…

MALICIOUS

PDF

55.8 KB Authoring application: pstoedit
MD5: 57f672d473827484fbeb24ed356dddcb SHA-1: 05697f2abd4180a4eed429fd28b5cd39c05f677c SHA-256: ba5a6c49a2146064d331f910e6c027a8e0df3dc396a572dd21ee185b3129fe07
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, indicating a link farm or redirection strategy. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' further supports a phishing or traffic-generation intent. The document body is heavily obfuscated and does not provide clear textual lures.

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://zavod-olimp.com/uploads/2020/01/28/9875908.pdf
    • http://menagainstcancer.net/uploads/1/3/0/3/130323182/fiwabovisiw.pdf
    • http://fairedfundingny.org/uploads/1/3/0/2/130288381/dunojazum.pdf
    • http://wildernessimperative.org.uk/uploads/1/3/0/3/130313203/473d4a197.pdf
    • http://ninthquarterproperties.com/uploads/1/3/0/4/130483307/xeluwoxopaw.pdf
    • http://mikedonovancoronado.com/uploads/1/3/0/5/130589219/dumuna_rofexe_davaba.pdf
    • http://structuraldamage.org/uploads/1/3/0/5/130590537/5149432.pdf
    • http://mourntolight.com/uploads/1/3/0/2/130291699/lewarixi.pdf
    • http://cincoranchpoolbuilders.com/uploads/1/3/0/6/130620651/motiwa-mizofevokosemiz-guwolex.pdf
    • http://iclubgood.net/uploads/1/3/0/3/130379351/nefeguv.pdf
    • http://newenglandcanna.com/uploads/1/3/0/7/130739928/pipet.pdf
    • http://riversidecountyhistory.org/uploads/1/3/0/2/130273913/130273913.html#sleep+and+circadian+rhythm+disruption+in+schizophrenia

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001571.bin
2458bf94ad2aab6fdec303e4432fad90cc4e29acbdcca0716e476d4eaf09a295		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1571 8452 bytes
font_01_sfnt_off00009480.bin
ddc6c38a5929b263b215a5b0c7aa8b1a409f146866f06980111f9f21a6232bf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9480 16036 bytes

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