Malicious PDF — malware analysis report

Static analysis result for SHA-256 833ea0ce7d9cb0c6…

MALICIOUS

PDF

52.8 KB Authoring application: Serif PagePlus
MD5: b9890560a0e542d89745c7729c6e069f SHA-1: 3d9e38ee45e0fc309eec729d63c67301cd502638 SHA-256: 833ea0ce7d9cb0c66554a121c340b587ac38b86ba65de94a7da628ecb6208958
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This behavior is indicative of a link farm or SEO spam operation, designed to drive traffic to external sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution through these linked documents.

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://gitanno.com/uploads/1/3/0/6/130620581/5865372.pdf
    • http://www.verdecarpetcleaning.com/uploads/1/3/0/8/130814339/2991968.pdf
    • http://supportingdaz.com/uploads/1/3/0/5/130590282/6669278.pdf
    • http://printable-ebooks.com/uploads/1/3/0/6/130639217/b3f4001e4977ce.pdf
    • http://jasonmetsa.net/uploads/1/3/0/6/130604010/9282637.pdf
    • http://commstech-hub.eisf.eu/uploads/1/3/0/4/130478609/pisemux.pdf
    • http://misemeli.com/uploads/1/3/0/6/130639412/5158613.pdf
    • http://safeportdesign.com/uploads/1/3/0/6/130603976/6375691.pdf
    • http://mineshaftgems.com/uploads/1/3/0/6/130620459/23fb90311204.pdf
    • http://104450345337014885.com/uploads/1/3/0/5/130540146/6044618.pdf
    • http://fischerfarmflowers.com/uploads/1/3/0/7/130775897/domatokoxon.pdf
    • http://resurrectionmusem.com/uploads/1/3/0/7/130740592/7841903.pdf
    • http://susiesbistroandbakery.com/uploads/1/3/0/5/130543980/8089870.pdf
    • http://www.qualityservice365.com/uploads/1/3/0/4/130476784/jukimoxariw.pdf
    • http://sweetsbykay.com/uploads/1/3/0/5/130551115/vigijopami.pdf
    • http://www.investimentoecon.com/uploads/1/3/0/7/130739947/9d1126518e7929.pdf
    • http://sfboyz.org/uploads/1/3/0/3/130323794/wogukudazaf.pdf
    • http://1220productions.com/uploads/1/3/0/6/130640094/febafadiruzud.pdf
    • http://daytripper.net/uploads/1/3/0/7/130739635/wonuz.pdf
    • http://tmctouch.tech/uploads/1/3/0/4/130436089/4043084.pdf
    • http://carharbour.co.uk/uploads/1/3/0/4/130476076/4d580cd155.pdf
    • http://blaspheme48.pleasingfood.com/uploads/1/3/0/6/130605357/130605357.html#20225+adobe+pdf+port+printer

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001120.bin
37d8eb0bb9a919b868d3127d50829969611706be6b97df9d45ab3c101b0ffc2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1120 8628 bytes

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