Malicious PDF — malware analysis report

Static analysis result for SHA-256 474f32622d6db8cc…

MALICIOUS

PDF

46.8 KB Authoring application: QPDF
MD5: 324543de664930526bf3e1cc701220ab SHA-1: 892d1f95acf3e1c9c737d34844e64c8158131748 SHA-256: 474f32622d6db8cc6dbba8e9d4b4ce78b173c33a3190d95b6add842b16b040a1
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also flag this file as malicious, specifically as a phishing or traffic-robot-related threat. The embedded URLs suggest a tactic to drive traffic to numerous PDF files hosted on various domains, likely for SEO-based phishing or to distribute further malicious content.

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://golezibaj.lcmevents.com/uploads/2020/01/29/e809e.pdf
    • https://xiniwekobawik.weebly.com/uploads/1/3/0/2/130288545/4450170.pdf
    • http://arrowheadacupuncture.com/uploads/1/3/0/3/130323298/0d216.pdf
    • http://dax.master-grumer.ru/uploads/2020/01/28/6511886.pdf
    • http://mooredems.com/uploads/1/3/0/2/130270923/1910397.pdf
    • http://yamayogacollective.com/uploads/1/3/0/5/130551692/c120c4550135809.pdf
    • http://rogerrealty.com/uploads/1/3/0/7/130739146/kotudakodidiwana.pdf
    • http://telecelpromo.com/uploads/1/3/0/5/130588821/3785232.pdf
    • http://colapservices.in/uploads/1/3/0/5/130551116/69c03cd7c.pdf
    • http://creatables.ca/uploads/1/3/0/6/130604140/130604140.html#cerita+anak+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013b1.bin
ec8610b6cfa759c487a29247215a705cf1c0c831b5f2dfac814e6c18c4e62437		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B1 7528 bytes

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