Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5ae29d5e4ed03d0…

MALICIOUS

PDF

32.9 KB Authoring application: Solid Converter PDF
MD5: 54ba607a208144f7c71248f5f5eeb474 SHA-1: 10eaf183045468fb28d515f434a24f90e414a841 SHA-256: d5ae29d5e4ed03d05e69b36bca1834e47e583907fe4ae5c98336e51127784d3d
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious classification. The document body, though containing calculator-related text, is likely a lure to disguise the malicious intent of redirecting users to potentially harmful websites.

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://dexavaw.hnhojjat.com/uploads/2020/01/28/waforev.pdf
    • http://xeza.audiostart28.icu/uploads/2020/01/29/5969109.pdf
    • https://dedegitusorimep.weebly.com/uploads/1/3/0/5/130545485/8149130.pdf
    • http://gefugig.achdziewczyny.site/uploads/2020/01/28/ded9d4.pdf
    • http://raxami.moscowhome-realty.ru/uploads/2020/01/29/8400944.pdf
    • http://mosap.fondgreenbros.ru/uploads/2020/01/28/79b447c1c0d4e1a.pdf
    • http://kalowoweg.heatherandleewedding.com/uploads/2020/01/27/rutadat-fetoxav-wabobamunakutis-sokogiwinisapir.pdf
    • https://tojiwepese.weebly.com/uploads/1/3/0/6/130603823/3cf8463e.pdf
    • http://multistreams.com/uploads/1/3/0/5/130589278/130589278.html#t+table+two+tailed+calculator

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001129.bin
94b98589a8152469d961da317a9f6157053e0b668626250e3c8def049ef94082		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1129 7048 bytes
font_01_sfnt_off0000442b.bin
4d9ec2aec8f1ca6bebe1b56492fd55a77bba3a6e98efb76508c1b835d4eb9912		 pdf-font-stream PDF embedded font (sfnt) at offset 0x442B 2860 bytes

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