Malicious PDF — malware analysis report

Static analysis result for SHA-256 c305dc9b0c2ce408…

MALICIOUS

PDF

46.0 KB Created: 2020-04-02 08:39:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b3f87d8ccede7cf3293b425c497fd517 SHA-1: fbb001e28b2ff899d82fa56dbc7d9ea8ffa56f46 SHA-256: c305dc9b0c2ce408e79e9b9d640a4b8efd2f6d33b9bf0e01777d9d0df8ef507c
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, identified as a 'PDF_SEO_LINK_FARM' heuristic. The document body, though partially corrupted, contains a URL that appears to be a lure for 'Big little lies season 2 episode 3 music list'. The primary function seems to be directing users to a multitude of other PDF files hosted across various domains, likely to manipulate search engine results or distribute further malicious content. No scripts were extracted from this sample.

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://foodandbelly.com/uploads/1/3/0/8/130814591/130814591.html#big+little+lies+season+2+episode+3+music+list
    • http://soulography1111.com/uploads/1/3/0/5/130589090/6620356.pdf
    • http://dmdhomes.net/uploads/1/3/0/9/130969897/pejipodegeb.pdf
    • http://bijleren.com/uploads/1/3/0/6/130621682/c1adc.pdf
    • http://uintahonlinek8.com/uploads/1/3/0/6/130621461/guwebaw-nataravenizi-tovosuvefef-pudutatewi.pdf
    • http://theadvertemporium.com/uploads/1/3/0/4/130476912/623955.pdf
    • http://suvinpark.com/uploads/1/3/0/5/130547552/20e691ea5957bfa.pdf
    • http://sonny5ideup.com/uploads/1/3/0/7/130739015/ritekexug.pdf
    • http://allfor1beauty.com/uploads/1/3/0/9/130969411/8897ce729ee750f.pdf
    • http://eternalskytravel.com/uploads/1/3/0/6/130603968/b11a72a6.pdf
    • http://envolvecollective.com/uploads/1/3/0/5/130588343/98ddeb8d1.pdf
    • http://freshbusinessptyltd.com/uploads/1/3/0/3/130313410/kikupolesazonigup.pdf
    • http://venue2go.com/uploads/1/3/1/1/131164090/zewateti.pdf
    • http://vaylink.com/uploads/1/3/1/4/131407535/4635118.pdf
    • http://thebrideonline.com/uploads/1/3/0/3/130324331/lofaxovodekat.pdf
    • http://saba4life.com/uploads/1/3/0/4/130483418/dipikufonuwes.pdf
    • http://paquetesdegraduacion.com/uploads/1/3/0/7/130775127/fidafap-rudakaratevusi-zuxosijodefew-xoxirivag.pdf
    • http://myprojectamerica.com/uploads/1/3/0/5/130542773/998728.pdf
    • http://larremoremusic.com/uploads/1/3/0/5/130539111/kifavatuv.pdf
    • http://casaraumdesign.de/uploads/1/3/1/3/131380901/9dddf471.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_off00008896.bin
6d7ec5f22d897ad0c446b6e66754e4d33a2a2a06196b83fc6f63d932e5d7bb42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8896 9244 bytes

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