Malicious PDF — malware analysis report

Static analysis result for SHA-256 d895d903b28bd9c2…

MALICIOUS

PDF

48.7 KB Authoring application: pdf-parser
MD5: b3b2f34927478e8bfa8f8d8129d5ca67 SHA-1: 40a59e5c76a8a09fff77271f3f47244653d92dd7 SHA-256: d895d903b28bd9c29a5e5ca3d625ff949b315af485f8cf436a85ff3bade70b10
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine the exact user-facing lure.

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://coderedpicturecompany.com/uploads/1/3/0/5/130588554/debak_tojodoridexula.pdf
    • http://sunnybottom.com/uploads/1/3/0/6/130620468/754c75f.pdf
    • http://fabafagez.pweuxk.xyz/uploads/2020/01/29/5420484.pdf
    • http://oliviadummer.com/uploads/1/3/0/6/130639426/kototigilerufo.pdf
    • http://panoxawul.chelny-master.ru/uploads/2020/01/29/4397741.pdf
    • http://3albab.net/uploads/1/3/0/3/130324164/9516186.pdf
    • https://dezafuxu.weebly.com/uploads/1/3/0/2/130288399/da23a04f375.pdf
    • http://rockcrossingcc.com/uploads/1/3/0/6/130621634/b67d40376a0.pdf
    • http://blacklines.org/uploads/1/3/0/2/130289458/68088e4a9c59.pdf
    • http://mycarnabyscooter.com/uploads/1/3/0/5/130589228/1471410.pdf
    • http://xal.svea.pro/uploads/2020/01/28/f3f9cd2.pdf
    • https://rovisara.weebly.com/uploads/1/3/0/5/130588751/4099639.pdf
    • http://steelcityselectsoftball.com/uploads/1/3/0/4/130477152/7750e3ba7b7331e.pdf
    • http://netanawest.com/uploads/1/3/0/3/130324440/luvepigari.pdf
    • http://kifuxafuxe.maska.org/uploads/2020/01/29/fapagegekexi-jebiziwinupi-kulatexipav-susumolukab.pdf
    • http://nerine.org/uploads/1/3/0/3/130312976/lasasufunut-wirer-ridogalumibe-pelerapulosub.pdf
    • http://24cci.com/uploads/1/3/0/6/130604250/629167.pdf
    • http://chewoncakes.com/uploads/1/3/0/4/130489725/130489725.html#pc+adventure+games+2018

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001705.bin
a7ec9329c8c0423b9e83b5ec03ee07c4778e67e00852b46e1bb1a9f859213a41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1705 8068 bytes

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