Malicious PDF — malware analysis report

Static analysis result for SHA-256 89b32195c280d650…

MALICIOUS

PDF

39.3 KB Authoring application: Mobipocket Creator
MD5: 90bb55453791cc8f3127385b0cae9531 SHA-1: 5de70be9945ba3d7f0f7f6c8e199ac6dd9cc8076 SHA-256: 89b32195c280d650ee3aa92cfd08d564acaf16844a470746ee87e5cc263db00c
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 URLs pointing to other PDF files, a technique commonly used for SEO spam or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. No scripts were extracted from this sample, and the document body content was heavily corrupted and unreadable.

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://metaldoc.com/uploads/1/3/0/6/130621402/5058353.pdf
    • http://mlachomes.com/uploads/1/3/0/7/130775850/gomuzemaveg.pdf
    • http://cesun2018.org/uploads/1/3/0/6/130605120/6f9042679.pdf
    • http://acousticfloydtribute.com/uploads/1/3/0/8/130874492/ab1051a3e887.pdf
    • http://adultsthemes.com/uploads/1/3/0/4/130436130/nowexuleboz.pdf
    • http://allahand.com/uploads/1/3/0/8/130813524/jiginipuzuzigeres.pdf
    • http://theoperapreneur.com/uploads/1/3/0/5/130551378/5218225.pdf
    • http://pollyjasmine.com/uploads/1/3/0/7/130775271/6070508.pdf
    • http://lcdigitalconnect.com/uploads/1/3/0/5/130588936/vasiza-resopik-tefipagaleguv-jemawuwesal.pdf
    • http://www.desr.org.uk/uploads/1/3/0/3/130379087/3511770.pdf
    • http://awestruckwellness.com/uploads/1/3/0/5/130541881/61815abe07eb9af.pdf
    • http://wisefoolshakespeare.com/uploads/1/3/0/7/130776810/menes.pdf
    • http://c0118146xstreamtravel.xsideas.com/uploads/1/3/0/6/130639653/130639653.html#uses+of+sds+page+gel+electrophoresis
    • http://alraby.cps.edu/uploads/1/3/0/6/130604022/9849368.pdf
    • http://alraby.cps.edu/uploads/1/3/0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004032.bin
42a1b08281448c37124dc0b6803a44f7bf0ef82d5bcc10870647650ebe8da9fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4032 8352 bytes

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