Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e13b284a6a0070f…

MALICIOUS

PDF

40.9 KB Authoring application: GIMP
MD5: d60ba25133e4a4e0ef40f3b8f9744b1d SHA-1: 73cbdfe44d39f3a36271955f48ed7353d2af487c SHA-256: 2e13b284a6a0070fc32230999c5cb57a2a51c30bd701dd2695274215594f4503
150 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The primary heuristic indicates a 'PDF_SEO_LINK_FARM' with 28 external links, suggesting a phishing or content-distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://yabustudio.com/uploads/1/3/0/2/130287862/6843105.pdf
    • http://azerothunited.com/uploads/1/3/0/2/130287454/fc2fcf9285e3.pdf
    • http://nfondy.com/uploads/1/3/0/6/130639445/pituvisivikun_mufiritunuw.pdf
    • http://thesociallubricant.co/uploads/1/3/0/6/130604806/bejididuwoxogebiximo.pdf
    • http://nataliezinawalschots.net/uploads/1/3/0/7/130739185/sifipibomo.pdf
    • http://eliahypnosis.com/uploads/1/3/0/7/130775567/tujepe.pdf
    • http://madace.com/uploads/1/3/0/6/130604575/nomanujarurewak.pdf
    • http://motortrainingtotaal.com/uploads/1/3/0/7/130738632/gifixewikofeno.pdf
    • http://refresh-hr.co.uk/uploads/1/3/0/8/130813428/ae13504c3787897.pdf
    • http://catholicsonfire.net/uploads/1/3/0/6/130620650/4dd653753f157f6.pdf
    • http://www.crrnreviewcourse.com/uploads/1/3/0/4/130488975/4461170.pdf
    • http://www.livredesoi.com/uploads/1/3/0/7/130775587/kefolujagovabo.pdf
    • http://myescondidosoccer.com/uploads/1/3/0/8/130874501/8658125.pdf
    • http://samohtdesign.com/uploads/1/3/0/5/130589444/d0a1e3.pdf
    • http://commediaprod.com/uploads/1/3/0/8/130874655/130874655.html#abdul+hakim+murad+reading+list
    • http://www.crrnreviewcourse.com/uploads/1/3/0/4/130488975/4

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d48.bin
b975f6e9a3dacf9290390517028ee52d44e6e6575e6138479980a0fa520f3b46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D48 16168 bytes
font_01_sfnt_off0000453f.bin
dd281ffec68150af57dc4a3dd2c6908a79f3158b7836292b61a3e71526034a6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x453F 8568 bytes

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