Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7135884f5981419…

MALICIOUS

PDF

39.4 KB Authoring application: Pdftk
MD5: c40d231a6644cb012f1c17d00cd812b8 SHA-1: 038e09894c07d443e20d4d1a9f398c528debc564 SHA-256: f7135884f5981419d30e5c960158cc88d445f209b36f918cc5e0e269cee0e487
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, which is indicative of a phishing or malware distribution scheme. The ClamAV detection and ML classifier further support its malicious nature. The embedded URLs likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://bistrous.com/uploads/1/3/0/7/130739015/dozepozaposuwame.pdf
    • http://vidracariaartvidros.site/uploads/2020/01/28/2f40def6c6c.pdf
    • http://microblading-amsterdam.com/uploads/1/3/0/5/130544672/0216e0951.pdf
    • http://accuplus-parkour.com/uploads/1/3/0/6/130604210/89a826e7099.pdf
    • http://highsolaris.com/uploads/1/3/0/2/130272629/764949.pdf
    • http://nuobeijinghotel-chinese.devsite-1.com/uploads/1/3/0/6/130604314/130604314.html#amazing+grace+sheet+music+for+bagpipes

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001088.bin
7b4e1042306c972134ab139024ac0b19cd95ab73e0ccc4e579ca29f605da2caa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1088 9008 bytes
font_01_sfnt_off00006100.bin
84340d81b687e5658134e86d602934373e4edb1358290f916b35b324124d256a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6100 2696 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.