Malicious PDF — malware analysis report

Static analysis result for SHA-256 4050a123f8f4d75f…

MALICIOUS

PDF

43.1 KB Created: 2020-04-06 14:04:40 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 57de824a2bb59fbcc597f9fd4cdd040e SHA-1: a7c3dd3ba17c3bb715f2b008e4cf7132e099e024 SHA-256: 4050a123f8f4d75f4ef188ff9bbe708b33ee9fc0c7d93673616e57cdc92a9f29
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of external links, many of which point to other PDF files hosted on various domains. The document body suggests a lure related to home exercise routines, which is likely a pretext to drive traffic to these linked resources. The PDF_SEO_LINK_FARM heuristic indicates a deliberate attempt to create a link farm, a common tactic for SEO manipulation or distributing malicious content. No scripts were extracted from this sample.

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://orangefundraising.com/uploads/1/3/0/5/130545021/130545021.html#rutina+de+ejercicios+en+casa+para+bajar+de+peso+principiantes
    • http://hephub.net/uploads/1/3/0/6/130639977/5eb4a0065a526b2.pdf
    • http://countrylifedevelopments.com/uploads/1/3/0/5/130588246/gizebasoduba_gapoxusapez_tufuvoretisije.pdf
    • http://braizinmuebles.com/uploads/1/3/0/5/130539437/misukinerosix.pdf
    • http://ranzbeautylinehq.com/uploads/1/3/0/3/130312983/zewejexamanow.pdf
    • http://vibrantlyvinyl.com/uploads/1/3/0/5/130588702/962543.pdf
    • http://catherineccartwright.com/uploads/1/3/0/2/130287419/1a77b.pdf
    • http://ivyclover.com/uploads/1/3/1/3/131397983/50a41ebe4c56.pdf
    • http://intgovforum-deutschland.org/uploads/1/3/0/5/130541641/nalodejukiwasamigob.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_off00007d41.bin
a87b23bac0ddee93c907cc1341a056410b7436f3178fef3774e969d8d9a8d8e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D41 8852 bytes

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