Malicious PDF — malware analysis report

Static analysis result for SHA-256 55f279d30300855c…

MALICIOUS

PDF

37.6 KB Created: 2020-04-11 12:09:17 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4c807b9d15864501f66bba912bf29220 SHA-1: 8c184b8d4380e4b40a468788211494ce1b548679 SHA-256: 55f279d30300855c0f2a47748ffd2465b65459d19a548a64fb6d823086f7b551
62 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 technique commonly used for SEO poisoning or to direct users to malicious websites. The heuristic 'PDF_SEO_LINK_FARM' specifically indicates a mass external PDF link farm, suggesting an attempt to manipulate search engine results or distribute malware. No scripts were extracted from this sample, but the extensive link farm is a strong indicator of malicious intent.

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://foothillsbiblefellowship.com/uploads/1/3/0/4/130491850/130491850.html#winter%27+s+bone+pdf
    • http://hungersunday.org/uploads/1/3/1/4/131406303/pesozoto_fokanopalenaku_wolifex.pdf
    • http://contactmts.com/uploads/1/3/1/0/131070971/xisesuzefigot.pdf
    • http://agenciabetextravel.com/uploads/1/3/0/6/130603763/linebokolerebugag.pdf
    • http://ly1.fr/uploads/1/3/1/0/131071183/dobameduxunalef_wodilixevo.pdf
    • http://rsacil.org/uploads/1/3/0/3/130323175/pinutifonakom-xizejowit-tofagaba.pdf
    • http://artculturevs.com/uploads/1/3/1/4/131438835/getukot-mabomesowigaro.pdf
    • http://aqua-active.com/uploads/1/3/0/4/130477085/rutiwugovijokiro.pdf
    • http://peterjuhl.dk/uploads/1/3/1/4/131437513/zubakowiraw.pdf
    • http://ncmusictherapy.org/uploads/1/3/0/3/130323207/vosawamabepu-pobajisip-nebavorirerib.pdf
    • http://crookdlense.com/uploads/1/3/1/4/131437223/gugox-pojanuniset-xuvageboxeso.pdf
    • http://nolatesting.com/uploads/1/3/1/0/131071082/b575066e2dfc2.pdf
    • http://bechinkleydesigns.com/uploads/1/3/1/4/131407742/ditimawegemefoxe.pdf
    • http://gm-travels.com/uploads/1/3/0/7/130740265/molejowabe.pdf
    • http://tiendan.studio/uploads/1/3/0/5/130550652/kinimubusak-bavefabekop-tajimagujuwaf-nirufafusizuja.pdf
    • http://kristasportfolioteaching.com/uploads/1/3/0/2/130291769/kenameviwatop.pdf
    • http://aqua-active.com/u
    • 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_off00006b7e.bin
1de548e3ce6831bfc2968ed54e42c5dd441146e6e0bcea9f6ae308ad72c611ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7E 7592 bytes