Malicious PDF — malware analysis report

Static analysis result for SHA-256 188a352a7689a770…

MALICIOUS

PDF

73.8 KB Authoring application: Soda PDF
MD5: 90c35810e996c1aeeee0116f47a575f6 SHA-1: fa84424931f6842200384eca31e9120f9d0bdb21 SHA-256: 188a352a7689a77063d73a9d5b098d6edd4999c25e85a891c05b9b903a6c5aa0
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by multiple heuristics, including a critical finding for a large external link farm and ClamAV detection as phishing malware. The embedded URLs within the document body, despite being obfuscated, point to numerous external PDF files, strongly indicating a campaign to distribute malicious content or phish users. No scripts were extracted, but the sheer volume of linked PDFs suggests a coordinated effort to redirect victims to potentially harmful sites.

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://kegu.uranalitika.ru/uploads/2020/01/28/sofobekizu_pibegiv.pdf
    • http://wivuw.stillika.ru/uploads/2020/01/27/regozan.pdf
    • http://sapawef.qiwi-luck.pw/uploads/2020/01/27/26bdeab8.pdf
    • https://wuzerubuwo.weebly.com/uploads/1/3/0/4/130483577/2503238.pdf
    • http://dori.rantjeteam.ru/uploads/2020/01/27/0681db28d8.pdf
    • http://fewijox.race-charter.ru/uploads/2020/01/28/2acd8d73eef.pdf
    • http://fiv.ddnshit.com/uploads/2020/01/28/b349e44eefc.pdf
    • https://runefojawazif.weebly.com/uploads/1/3/0/4/130478259/2764295.pdf
    • http://moxeki.ataxib.com/uploads/2020/01/28/7427515.pdf
    • https://goropetinopuj.weebly.com/uploads/1/3/0/5/130551115/tibizoxanisupar.pdf
    • http://wuredorut.mariocoin.ru/uploads/2020/01/28/4778254.pdf
    • http://tesajesa.ts3update.info/uploads/2020/01/27/kinibuw_fegurusuxok.pdf
    • http://giwab.anal-teens.fun/uploads/2020/01/28/tarefiza-wejefimiso.pdf
    • https://viridonowokuxak.weebly.com/uploads/1/3/0/5/130550721/riwozomuvoxa.pdf
    • https://morarafaf.weebly.com/uploads/1/3/0/5/130590224/130590224.html#carolina+panthers+preseason+2018
    • 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_off00001424.bin
87c850d405fef1500201d68f6214db5e52ff307f566f27e37906f408f0c46713		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1424 8444 bytes
font_01_sfnt_off0000e75e.bin
7863b829de04ea8b7f5be4d5dae43fa62182e7611f0c3a300d10b316d27db496		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE75E 2732 bytes

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