Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d64c65653457d00…

MALICIOUS

PDF

38.7 KB Created: 2020-04-15 04:37:39 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 812ba3029ec94c6c5e6ff15f599c4535 SHA-1: f64e8c9a12b558f0291befef52d0d8584ff5aaed SHA-256: 4d64c65653457d00b70942dce20fdee3094efc04c20e7f260d6b7dabb7c93ee2
70 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, many pointing to other PDF files, indicative of a link farm or SEO abuse tactic. One heuristic specifically flags this as a 'PDF_SEO_LINK_FARM'. Additionally, a 'SE_DOWNLOAD_BUTTON' heuristic suggests a call-to-action lure within the document body. The embedded URLs likely serve as the initial redirection point for a phishing or malware delivery attempt.

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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://thebluelinephotography.org/uploads/1/3/0/7/130740374/130740374.html#gunshot+muzzle+flash+free
    • http://olisanamariner.com/uploads/1/3/0/3/130323437/5494097.pdf
    • http://lisannevanaert.nl/uploads/1/3/1/4/131437844/218879.pdf
    • http://hoopsemb.com/uploads/1/3/1/4/131482958/4839488.pdf
    • http://beachbodstci.com/uploads/1/3/1/4/131438847/toxumumugowezitaju.pdf
    • http://iathletes.com/uploads/1/3/0/7/130739558/2372502.pdf
    • http://gloriamata.com/uploads/1/3/0/4/130489358/bafadorosos.pdf
    • http://kvprologistics.com/uploads/1/3/0/6/130603997/9884083.pdf
    • http://iathletes.com/uploa
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000703d.bin
905ab32df17fed4bb9254d4fefac236fb1a56a2b5f3d473e40faf9df7e566a8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x703D 8224 bytes

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