Malicious PDF — malware analysis report

Static analysis result for SHA-256 f22122caff280b94…

MALICIOUS

PDF

34.1 KB Created: 2020-04-07 10:00:08 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3e7188a07a3fe9c58186e1dcff8fbfd0 SHA-1: f1f6481e8071c83334f45de8209d8206aefea94a SHA-256: f22122caff280b943f2f94e722b58465060ab136d5292c3dfc8f1f2bf2a20006
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of external links to other PDF files hosted on various domains. This pattern is indicative of a link farm or a distribution network designed to spread malicious content or manipulate search engine results. No scripts were extracted, and the document body is heavily obfuscated, but the heuristic firings strongly suggest a malicious intent related to link distribution.

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://davidmarquesibanez.com/uploads/1/3/0/7/130775056/130775056.html#escuelas+secundarias+generales+en+queretaro
    • http://corporatehousingrentalaugustaga.com/uploads/1/3/1/4/131406686/56293ba385de9f6.pdf
    • http://zahnspange-ried.at/uploads/1/3/0/6/130604112/lorodaxe-wifudogefuse.pdf
    • http://handvangoud.nl/uploads/1/3/0/7/130775959/9511341.pdf
    • http://rdohomesolutionsllc.com/uploads/1/3/0/7/130740250/tubiwarumatopefa.pdf
    • http://hyper-metrix.net/uploads/1/3/1/0/131070979/6029d4a27.pdf
    • http://freedompowerwashing.com/uploads/1/3/0/4/130477146/wekar.pdf
    • http://sephotography.studio/uploads/1/3/0/6/130604286/jedujirenobetar.pdf
    • http://jamesmower.com/uploads/1/3/1/0/131071117/xavanitaritakifuk.pdf
    • http://titanpreservationlawnservices.com/uploads/1/3/0/2/130274316/pifukonaxomo_jowijimanixaf.pdf
    • http://wandersmancenter.com/uploads/1/3/0/8/130813923/fanam.pdf
    • http://mail.snohomishlawyer.com/uploads/1/3/0/4/130488197/824019.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_off00005cad.bin
88d1ea6bf4c2a68c7233d98dad6e0bcf1aec4f2c844e164bba7c0859fe310b2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CAD 8180 bytes

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