Malicious PDF — malware analysis report

Static analysis result for SHA-256 0680a3691e5eb563…

MALICIOUS

PDF

44.5 KB Authoring application: Karbon
MD5: cf52feb6c25c382ed08e376bce7851fd SHA-1: e8c479bc156b4ca6958ef928498d5f20fd71986d SHA-256: 0680a3691e5eb5633be2757d4d881c6f913866294271de92fc22c8007b4546db
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a mass of external links disguised as a free promissory note form, aiming to trick users into downloading further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution via the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://slsfnc.com/uploads/1/3/0/3/130312914/gonew.pdf
    • http://activatemelbourne.com.au/uploads/1/3/0/4/130476688/wanasow.pdf
    • http://cemento-stampato.org/uploads/1/3/0/5/130588258/322d1464eeb0a.pdf
    • http://mind4age.com/uploads/1/3/0/6/130640232/zatidomewur.pdf
    • http://britishtitties.com/uploads/1/3/0/7/130775904/4b898354389ab.pdf
    • http://brujaheights.com/uploads/1/3/0/6/130604532/6520948.pdf
    • http://jamesmaltus.studio/uploads/1/3/0/6/130639712/gavuparofap_wokafoximebu_bobogamagegoken_gipak.pdf
    • http://winningwithservice.com/uploads/1/3/0/4/130483243/jamez.pdf
    • http://anniebeg.com/uploads/1/3/0/4/130476412/10479d.pdf
    • http://neokundalini.org/uploads/1/3/0/7/130739287/130739287.html#georgia+promissory+note+form+free

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013b5.bin
b53715d8660b139e7016f49cadbdd72eb30509168ac1dc3b040b614d5fd12ca4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B5 8772 bytes

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