Malicious PDF — malware analysis report

Static analysis result for SHA-256 49d75d4d598d2c1b…

MALICIOUS

PDF

66.5 KB Authoring application: Adobe PDF Library 9.0
MD5: eb96c378266d06d55907dddfd1e070d2 SHA-1: c5a69e88f031a5c6a2c16a497b851f19b012a39f SHA-256: 49d75d4d598d2c1b312bc000eacc6f918a3437924251751157a923eabe2272ac
152 Risk Score

Malware Insights

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

The PDF_SEO_LINK_FARM heuristic indicates the presence of a large number of external links within the document, pointing to other PDF files. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URLs likely serve as lures for phishing or to distribute further malware. No scripts were extracted from this sample.

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://mwellproductions.com/uploads/1/3/0/7/130739379/6b0fd92.pdf
    • http://kineffect.com/uploads/1/3/0/4/130435588/a0c2011eb.pdf
    • http://gwhomesandinteriors.com/uploads/1/3/0/5/130539438/3521595.pdf
    • http://www.navigatebetween.me/uploads/1/3/0/5/130544694/6006411.pdf
    • http://campaignartwork.com/uploads/1/3/0/3/130324136/9717d4d.pdf
    • http://access2offshore.com/uploads/1/3/0/4/130436389/xipusodijeti_lesis.pdf
    • http://cordivanoapparel.com/uploads/1/3/0/2/130270901/a7445.pdf
    • http://mta-sts.mail.eastleighpictures.uk/uploads/1/3/0/6/130620950/vaxeri.pdf
    • http://msrhondajwilliams.com/uploads/1/3/0/6/130639926/ragegawusa-bogapones-pozixu.pdf
    • http://ltcsoftball.org/uploads/1/3/0/6/130639535/mofajan-tumajudo.pdf
    • http://hivemindbrewing.com/uploads/1/3/0/2/130270874/giwezasivipu_xofel.pdf
    • http://74-123-79-136.mgwnet.com/uploads/1/3/0/6/130604729/130604729.html#pathophysiology+of+vascular+complications+of+diabetes

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001659.bin
61863f51512c119daa4f28f03d4753f256820bf3dd3ff2251bcc0095a8458cc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1659 8344 bytes
font_01_sfnt_off0000c959.bin
6f1f387d52074807ac10d6cfbea6a972aa9bc3cea2b6d3c6cccae243d08667e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC959 3156 bytes

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