Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2e52f759102d70…

MALICIOUS

PDF

40.1 KB Authoring application: GIMP
MD5: 3b690986e2bf6df8c0c837d52eafe82f SHA-1: 5e5bb84ded886a6f5d4d7953eae065089b72863f SHA-256: af2e52f759102d7038e5c049a0dce744230f79cd7db832c34d00cf25b7eacd26
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing or malicious redirection intent. The document body, though partially obfuscated, contains text related to watching movies online, suggesting a lure to entice users to click the malicious links.

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://audio-start38.icu/uploads/2020/01/27/3475276.pdf
    • http://soildsurfacewarehouse.com/uploads/1/3/0/4/130478314/fudisetifogef.pdf
    • http://lindsayplouffe.com/uploads/1/3/0/4/130435725/24326.pdf
    • http://buyatpure.com/uploads/1/3/0/4/130483322/25339df5291.pdf
    • http://newpathorg.com/uploads/1/3/0/4/130476069/bidaxatagerapug-zenosaxurut-giligeda.pdf
    • http://thelanguagefinder.com/uploads/1/3/0/5/130543173/fupupemipemu.pdf
    • http://risechildrenschoir.org/uploads/1/3/0/4/130477278/rutipubawunomivo.pdf
    • http://misssoutheastpageantry.us/uploads/1/3/0/7/130738881/130738881.html#watch+the+wedding+party+2+online+fre

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001210.bin
81586d15ccdb85efeff05091a59ec82a8c26524a35f6c4bcdb6ee405e8fdd385		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1210 10860 bytes
font_01_sfnt_off00005667.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5667 16036 bytes

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