Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7112dc76a396b8d…

MALICIOUS

PDF

53.4 KB Authoring application: ImageMagick
MD5: a26d34d58885446b78135573ffa311af SHA-1: 000ae27f1b09f218a66afecf6fb1b823975a2d48 SHA-256: a7112dc76a396b8d1b859014bf9b38658c7cd4dc92528b85abc6fbc27770f16d
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a link farm and a ClamAV detection for phishing. The ML classifier also strongly indicated maliciousness. The document body contains numerous external URLs, suggesting a phishing or redirection attempt. No scripts were extracted from this sample.

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://did.zincadoexpress.com/uploads/2020/01/27/texuw_retowodaj_farikasuwod_gibegi.pdf
    • http://midwestpark75.com/uploads/1/3/0/6/130621614/gemadosojetok.pdf
    • http://welcometo6h.com/uploads/1/3/0/5/130550703/nuvifup.pdf
    • http://themedicalscienceeditor.net/uploads/1/3/0/6/130604834/4647079.pdf
    • http://vikawob.istorii24.net/uploads/2020/01/28/modolodi.pdf
    • http://ancoraimparo.biz/uploads/1/3/0/5/130589187/4309940.pdf
    • http://stuccovenetiano.com/uploads/1/3/0/5/130588289/nusareg.pdf
    • http://angelasoffice.com/uploads/1/3/0/3/130379634/gupedine-kerojovisu.pdf
    • http://velocityproxies.com/uploads/1/3/0/6/130604287/5093431.pdf
    • http://nodimek.jewelia.ru/uploads/2020/01/28/9963961.pdf
    • http://aguiarassessoria.com/uploads/1/3/0/4/130478602/6518576.pdf
    • http://acouturelife.com/uploads/1/3/0/6/130604501/130604501.html#music+man+line+dance+step+sheet

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001472.bin
4960b1ce22fe0ae24d1f22f4030cd505bf0d173eea4de236349639078ba694fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1472 9312 bytes
font_01_sfnt_off00008b83.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B83 16036 bytes

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