Malicious PDF — malware analysis report

Static analysis result for SHA-256 f42183af62a430bd…

MALICIOUS

PDF

39.9 KB Authoring application: Mobipocket Creator
MD5: 875fa840c7ef6d839aa33e6eadda4dec SHA-1: 8988167e3192f004838ed6d9ac3cb04907a5d6e3 SHA-256: f42183af62a430bd16082e4eafc283ab082a8be2639420fa7c2d8affba6b6492
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution network designed to spread malicious content or manipulate search engine results. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic-generation motive. No scripts were extracted, limiting the analysis of direct payload execution.

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://thecraftroomomaha.com/uploads/1/3/0/6/130604582/63e33.pdf
    • http://2ndchancecollectibles.com/uploads/1/3/0/2/130289424/4158810.pdf
    • http://ruthnbrown.com/uploads/1/3/0/3/130323568/wonesazawubusotex.pdf
    • http://mysistersclosetedenton.com/uploads/1/3/0/6/130622024/7a0620258308e7.pdf
    • http://napavalleybus.com/uploads/1/3/0/5/130590257/jewijogoje-nodaxepupukigim.pdf
    • http://amundsenpr.com/uploads/1/3/0/5/130590770/nakanuradenasa.pdf
    • http://acnightmarket.com/uploads/1/3/0/7/130738805/vuxagumijilamika.pdf
    • http://gnshs-ptsa.org/uploads/1/3/0/2/130287988/petetonuwebis.pdf
    • http://iweargreatness.com/uploads/1/3/0/6/130639258/130639258.html#high+alkaline+foods+chart+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011c7.bin
4439b1013050b71508c69a2a5f0435c63fb01959db973813b72175a43fb7728d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C7 8560 bytes

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