Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4ab14758a4a41db…

MALICIOUS

PDF

34.2 KB Authoring application: Soda PDF
MD5: c52d48a41888fd052a9e642b6185c1f7 SHA-1: 3e3169de596c9590da1cc1ef1d8ad646c7b036a8 SHA-256: d4ab14758a4a41db037fda0a255694b20b00b26df2bb27a3b2232fd47a1e1480
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to medical recovery, aiming to trick users into clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://stickemupkidbeats.net/uploads/1/3/0/6/130620267/vuruxusa.pdf
    • http://www.ozainbotanicals.com/uploads/1/3/0/2/130272281/86b9f63.pdf
    • http://novovivo.org/uploads/1/3/0/7/130776350/dusuvudud-megelures.pdf
    • http://333survival.com/uploads/1/3/0/6/130605240/jexabiwiz.pdf
    • http://buycialis.com/uploads/1/3/0/4/130476525/jofikogorag.pdf
    • http://wanbaoluyulechengduchang.br3h.com/uploads/1/3/0/7/130776225/14e151d09.pdf
    • http://www.acaringtherapy.com/uploads/1/3/0/6/130639019/mikapazarosep-ninofer.pdf
    • http://tomasharanphoto.com/uploads/1/3/0/8/130874307/xokajug.pdf
    • http://bohemianbirth.ca/uploads/1/3/0/5/130542781/410503.pdf
    • http://hbam.dadgifts.us/uploads/1/3/0/7/130739198/biwumupipu.pdf
    • http://rehphotography.org/uploads/1/3/0/4/130488165/130488165.html#acl+tear+without+surgery+recovery+time

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003156.bin
3f8a7a84f826cde735ee4159ea6b623f39e2e68259ad6450d95d8ba918c386b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3156 7404 bytes

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