Malicious PDF — malware analysis report

Static analysis result for SHA-256 68e37650746173b8…

MALICIOUS

PDF

44.8 KB Authoring application: pstoedit
MD5: bc9c13a6ee51ee24be7a3987ebf0bc71 SHA-1: ad4a1bc6599bdbd89f92adc3d4713512ad881792 SHA-256: 68e37650746173b8b9c4d7e6969c0fcb59d3a0cfc089b4ec2d6ac7a80813a96f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, indicating a link farm or phishing campaign. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or SEO spam attack.

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://climat23.com/uploads/2020/01/27/1932550.pdf
    • http://apologiesfrommen.com/uploads/1/3/0/5/130541004/f1acfbb8f.pdf
    • http://bashfitness.com.au/uploads/1/3/0/5/130551095/2d06ebaa.pdf
    • http://duwimi.photo-vologda.ru/uploads/2020/01/27/ee27b4.pdf
    • http://patrickmcgeough.com/uploads/1/3/0/5/130540897/fbbb5afa714778b.pdf
    • http://basa.plaksi.digital/uploads/2020/01/27/4b42fc9f.pdf
    • http://lookatyouus.com/uploads/1/3/0/5/130589400/xixulab_zikunirazaw_didapufed_xelowa.pdf
    • http://duzipuz.digital-car.ru/uploads/2020/01/27/muxisapo-rokodizo-loruletofobemu-rivurigoninomof.pdf
    • http://dil.sigvey.pro/uploads/2020/01/27/xawudeg-jenak.pdf
    • https://betubavagitote.weebly.com/uploads/1/3/0/4/130483215/9979732.pdf
    • http://nora-pauli.net/uploads/1/3/0/6/130604411/f97facc.pdf
    • http://dirtkingsrc.com/uploads/1/3/0/4/130475932/zajulizonu.pdf
    • http://nicholslawpdx.com/uploads/1/3/0/5/130545382/7158b470076130.pdf
    • http://stmarysoccer.com/uploads/1/3/0/6/130621581/8446637.pdf
    • http://teamjaime.com/uploads/1/3/0/4/130488158/8327926.pdf
    • http://monagarciamusic.com/uploads/1/3/0/5/130589147/4160364.pdf
    • https://vojawelopivudul.weebly.com/uploads/1/3/0/4/130488123/6769470d.pdf
    • http://tejo.o-studia.ru/uploads/2020/01/27/sazapabisurifusorazo.pdf
    • http://caredynamicsfl.com/uploads/1/3/0/2/130272231/1844845.pdf
    • http://weronikaronnie.com/uploads/1/3/0/5/130539599/rezebojad_gawiwaxuroxipi_buzezedejuja.pdf
    • http://lojavuv.markskc.xyz/uploads/2020/01/27/690afd.pdf
    • http://sanblastoursislands.com/uploads/1/3/0/2/130288520/310c57993b4690f.pdf
    • http://communitycure.net/uploads/1/3/0/4/130477193/morewij.pdf
    • http://brightzone.net/uploads/1/3/0/5/130590235/130590235.html#18+gauge+ms+sheet+thickness+in+mm
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000184d.bin
a8d34c484be870cad0195a16b9aaf60ed18ba4b9185672716d661184ee850a43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x184D 7836 bytes
font_01_sfnt_off00007364.bin
d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7364 2616 bytes

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