Malicious PDF — malware analysis report

Static analysis result for SHA-256 af5f8c8f653bd9f6…

MALICIOUS

PDF

34.6 KB Authoring application: OpenOffice Draw
MD5: da84e97199308ff2e857e72a80962dee SHA-1: 97160c866dc999713baac298fbd688343fdd8613 SHA-256: af5f8c8f653bd9f6583650da99ecd6b8c703ddf79618fed912c29891e2a6f803
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The document body, though heavily corrupted, appears to be related to data collection instruments, which could be a pretext for a phishing or scam operation.

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://pressburg-partners.com/uploads/1/3/0/7/130740504/3174a79.pdf
    • http://betelpaintco.com/uploads/1/3/0/8/130874289/dbedfa96c6c3e28.pdf
    • http://bjjfoku.com/uploads/1/3/0/2/130274322/pejekiropagijibubid.pdf
    • http://www.abundantmentalhealth.com/uploads/1/3/0/8/130814976/4f3868fe.pdf
    • http://tonypalladino.com/uploads/1/3/0/6/130639417/2516141.pdf
    • http://diradevelopments.com/uploads/1/3/0/8/130874284/xudamupasumujepumoje.pdf
    • http://mta-sts.mx.hopewellvalleyhistory.org/uploads/1/3/0/9/130969330/funuli-pedivubelaresux-lizexifabuwo-nuruzepasaxe.pdf
    • http://denkensoftware.com/uploads/1/3/0/5/130551181/862736.pdf
    • http://www.rmhsperformingarts.com/uploads/1/3/0/6/130622083/vetit.pdf
    • http://lucidubuntu.com/uploads/1/3/0/6/130604105/javewoku.pdf
    • http://pythonarena.com/uploads/1/3/0/6/130620375/5448793.pdf
    • http://msiclick.com/uploads/1/3/0/6/130603756/3b2ceb20caab9.pdf
    • http://braasch-sicherheit.com/uploads/1/3/0/2/130289313/1a0a11.pdf
    • http://a1503138xstreamtravel.xsideas.com/uploads/1/3/0/8/130873893/130873893.html#instrumentos+de+recolecci%C3%B3n+de+datos+cualitativos

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f4a.bin
16773d1cf0d417143b13e893c7562332daa0ef536fcb48691aea83bff173434b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4A 7976 bytes

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