Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7a5f463884415f0…

MALICIOUS

PDF

36.9 KB Created: 2020-03-18 13:45:51 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a78ae654ec5b8f5a7625edad4faa5cfb SHA-1: fa5eeddfc5cd5b955143c544ecd4e494173209b0 SHA-256: d7a5f463884415f03fb9000966d14e3655c071938c19eccb8015bc0a2c2f226f
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a common technique for SEO poisoning or distributing malicious content. The document body, though heavily obfuscated, contains a URL that points to a page with a product title, suggesting a lure. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm, indicating a likely attempt to drive traffic to potentially malicious sites.

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.
  • 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://morethanjustaface.nl/uploads/1/3/0/7/130775053/130775053.html#20+moa+picatinny+rail+riser
    • http://misspaulasyoga.net/uploads/1/3/0/7/130739340/6247529.pdf
    • http://connectedsystems.io/uploads/1/3/0/6/130620669/vebaxe_rodofosunivanig_xujum_wumom.pdf
    • http://yangandyang.org/uploads/1/3/0/3/130323116/tavigubezokox-wujefa.pdf
    • http://abbehhc.com/uploads/1/3/0/7/130739906/4132691.pdf
    • http://petalesdefleurs.com/uploads/1/3/0/8/130815017/zovugoxove.pdf
    • http://www.meirdamsport.eu/uploads/1/3/0/3/130313513/wiset_vuzotaf_nulimewu.pdf
    • http://ethanmonroesalons.com/uploads/1/3/0/8/130813413/5327240.pdf
    • http://vrdstudios.org/uploads/1/3/0/5/130550785/nukititupevojix.pdf
    • http://www.melmadotcom.com/uploads/1/3/0/2/130270873/7575961.pdf
    • http://tayshairdepot.com/uploads/1/3/0/6/130621557/kawonudemetuj-mitarorufuvomiz.pdf
    • http://guruofbridge.com/uploads/1/3/0/4/130483911/lanuka-gutuxokon.pdf
    • http://michanti.com/uploads/1/3/0/6/130640021/362c9cf9ce.pdf
    • http://timsyth.com/uploads/1/3/0/5/130550772/9213784.pdf
    • http://daniellekoson.com/uploads/1/3/0/5/130542770/5bc0ac6.pdf
    • 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_off000068cd.bin
d56c2d1340e75f3d30eefb3fab41362430d07c396c306222d82d8cf1519eefb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68CD 7568 bytes

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