Malicious PDF — malware analysis report

Static analysis result for SHA-256 3322d2b2789e1af3…

MALICIOUS

PDF

86.1 KB Authoring application: pdf-parser
MD5: 69493c6483762c07477bff6eab854bb2 SHA-1: ccf28f98e2d45b9bc6c11b9cad9838ee244cfc54 SHA-256: 3322d2b2789e1af34f8504740ca7b4df29fa403d2bb982466ae1789c2e19b771
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This behavior is indicative of a link farm designed to redirect users to potentially malicious content or phishing sites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious nature of this file. The document body content is heavily obfuscated and does not provide clear user-facing text, but the heuristic firings strongly suggest a malicious redirection scheme.

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://www.wolfcryer.com/uploads/1/3/0/7/130738625/369390.pdf
    • http://oaktreecapllc.com/uploads/1/3/0/5/130588574/795634.pdf
    • http://elpasotraffictickethotline.com/uploads/1/3/0/6/130639380/3181685.pdf
    • http://mosaicsupervision.org/uploads/1/3/0/5/130551523/ligemematif-wutozetidemazuk-jajajesixadiro.pdf
    • http://clbart.com/uploads/1/3/0/8/130873810/vezusatazoketomirep.pdf
    • http://storesketch.com/uploads/1/3/0/2/130272284/zuxupese.pdf
    • http://natecleveland.net/uploads/1/3/0/3/130313005/bumarikulefofafa.pdf
    • http://www.hettysneedles.com/uploads/1/3/0/8/130874680/7612598d68752d5.pdf
    • http://1prfilm.net/uploads/1/3/0/5/130588270/xinozotidov-govodurime-sopizubidasowut-notaredelu.pdf
    • http://mlkgrandjunction.com/uploads/1/3/0/8/130813458/3063537.pdf
    • http://ilgrandegiorno.com/uploads/1/3/0/7/130775498/7494497.pdf
    • http://dentnow-sc.com/uploads/1/3/0/2/130287462/gulokezomagi.pdf
    • http://hermosacrushstylist.club/uploads/1/3/0/2/130273993/83ca74bdae2cd.pdf
    • http://thesprayshoppe.com/uploads/1/3/0/7/130775376/130775376.html#geometrical+optics+mcat

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005df1.bin
6c484a5981f9976a37438a6632c523f05af42fe10e4836e5c66d199b18572b98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF1 4348 bytes
font_01_sfnt_off00006f6d.bin
9c8fcb65fb31ebef73a7e8d31ec341018c99839f466ad20dc15fa8caa93db256		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6D 9944 bytes

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