Malicious PDF — malware analysis report

Static analysis result for SHA-256 47e78b0dd77a03b7…

MALICIOUS

PDF

46.0 KB Authoring application: GIMP
MD5: faad4ac146edcf8b3c82a9ae4932393d SHA-1: 916c4743f11b3a945e2ffc52e56b4f84d0fb7f63 SHA-256: 47e78b0dd77a03b7cddb8845e1fcedba6724fcede50a6b92b47235071ff2616f
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The PDF_SEO_LINK_FARM heuristic indicates the presence of a large number of external links, with the first identified link being http://eumelhor.org/uploads/1/3/0/2/130288661/0f96411.pdf. This suggests the document's primary purpose is to redirect users to a network of malicious sites, likely for phishing or malware distribution.

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://eumelhor.org/uploads/1/3/0/2/130288661/0f96411.pdf
    • http://periscopedigital.com.au/uploads/1/3/0/7/130776105/4294868.pdf
    • http://my-living-benefits.com/uploads/1/3/0/5/130540266/532838.pdf
    • http://www.sfitzsimmons.com/uploads/1/3/0/5/130589274/xunesi_fipedatodul_dojiwexajexutu_ronitekuba.pdf
    • http://donikamiller.com/uploads/1/3/0/4/130435577/4f6bf.pdf
    • http://btbrv.com/uploads/1/3/0/5/130551765/somidabubipaseja.pdf
    • http://newyorksocialpages.com/uploads/1/3/0/7/130739253/c7d3a8c8.pdf
    • http://mayaarchaeology.net/uploads/1/3/0/3/130313612/vupuwifal.pdf
    • http://hostmaster.hdasussexbranch.org.uk/uploads/1/3/0/4/130476157/luraratukat_katatikegorujax_vituzowinajoni.pdf
    • http://openguardsweeps.com/uploads/1/3/0/7/130776714/3167422.pdf
    • http://newyearswim.co.uk/uploads/1/3/0/6/130621248/2996895.pdf
    • http://pinepinestudio.net/uploads/1/3/0/3/130379105/tunoxon.pdf
    • http://milesandmccleanllc.com/uploads/1/3/0/7/130776434/22059.pdf
    • http://mjtservices.info/uploads/1/3/0/7/130739274/vijorakuwin-wawuk-vilezupowune.pdf
    • http://nstrajectory.org/uploads/1/3/0/3/130323227/2868093.pdf
    • http://genservicecontracting.gammaxiques.org/uploads/1/3/0/8/130813897/130813897.html#klasifikasi+gulma+amaranthus+spinosus
    • http://my-living-benefits.com/uploads/1/3/0/5/13054

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000428b.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x428B 16036 bytes
font_01_sfnt_off0000598f.bin
566268349a2f3066244f5a0729b276ed9db33934483b87563ea027cda11cf5ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x598F 7856 bytes

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