Malicious PDF — malware analysis report

Static analysis result for SHA-256 0891775febc362e7…

MALICIOUS

PDF

41.3 KB Authoring application: OpenOffice.org
MD5: 163b5537d55a4775058680c292d39895 SHA-1: 17ef0e6577bd2a8978d8488e9bc6a4d935f33add SHA-256: 0891775febc362e706cbb3ec2e6e51b3c8c5eea23a6f292917a3006a1222480e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a mass external link farm, with numerous URLs pointing to other PDF files. This is indicative of a phishing or malware distribution campaign, likely using the document as a lure to download further malicious content. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://labschoolsnow.org/uploads/1/3/0/5/130590689/be6b61e7af81.pdf
    • http://futbol-tips.com/uploads/1/3/0/5/130545011/rojife.pdf
    • http://5thhop.com/uploads/1/3/0/3/130379757/294369.pdf
    • http://westsidewater.ca/uploads/1/3/0/4/130435577/4982854.pdf
    • http://tnonestopshop.com/uploads/1/3/0/6/130605072/6936893.pdf
    • http://sibilantspeech.com/uploads/1/3/0/6/130621941/605dd6.pdf
    • http://gowlands.com/uploads/1/3/0/7/130775505/kimaz-nekafudaxabog-nevijoxeveso.pdf
    • http://rosiemillicentkeating.com/uploads/1/3/0/7/130775624/semabalaxubotop-sirosasad-vadukanedobo.pdf
    • http://www.stirlingservices.net/uploads/1/3/0/7/130738973/7a0d08ad2cc8.pdf
    • http://cocobrite.info/uploads/1/3/0/4/130483539/mamewoxupatubu_pupile_xitowajubir.pdf
    • http://bespokely.com/uploads/1/3/0/4/130483122/70035.pdf
    • http://openpeer.foundation/uploads/1/3/0/5/130551661/tazinazonabawof.pdf
    • http://sabco.org/uploads/1/3/0/5/130540293/28b5d131.pdf
    • http://host246.carmichaelnl.com/uploads/1/3/0/8/130814534/130814534.html#sample+simple+interest+loan+agreement

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004724.bin
bddf6e849b00786de4ae90a92bcb41c33fc24f7c951cfbf23470f4cd8f96102f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4724 8688 bytes

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