Malicious PDF — malware analysis report

Static analysis result for SHA-256 a72ce0ea578db9ec…

MALICIOUS

PDF

27.5 KB Authoring application: ImageMagick
MD5: e92d04c7c10b5a27597765552685642a SHA-1: 9006c10a7b6d91889c056ca5eecc7fd335ad2eb2 SHA-256: a72ce0ea578db9ec39c0881fdd6acfd46466ac89591b1b59b2d287ac77d8f9df
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files hosted on various domains, indicating a link farm or redirection strategy. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or distributing further malware. The document body, though truncated, contains references to 'Reading explorer 2 pdf' and includes URLs, reinforcing the lure. 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://turizmtlt.ru/uploads/2020/01/28/248155.pdf
    • http://michelemoddesign.com/uploads/1/3/0/7/130739982/tuledarozar_fegireweg_dopuwure.pdf
    • http://obituar.org/uploads/1/3/0/6/130620576/juzurazerelate_jojofobu.pdf
    • http://yorubaclubofbelgium.com/uploads/1/3/0/5/130590159/mizalu.pdf
    • http://stlshrinerslimbreconstruction.com/uploads/1/3/0/7/130739628/069d0792.pdf
    • http://wb2129.com/uploads/1/3/0/5/130588151/zukonetizugafes-mativi-safupuwojuwut-gegirij.pdf
    • http://paiementfm.fr/uploads/2020/01/28/posuzowedoz.pdf
    • http://cafedonruiz.com/uploads/1/3/0/6/130620345/zamibo.pdf
    • http://cadenceresource.com/uploads/1/3/0/2/130291030/4113028.pdf
    • http://wanderboss.com/uploads/1/3/0/4/130483142/130483142.html#reading+explorer+2+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000116c.bin
9121b58218bd4e1f1a45a04d398305ba3b7a4a159ecd9de2c9c4d3a6271b8c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x116C 6808 bytes

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