Malicious PDF — malware analysis report

Static analysis result for SHA-256 f05367f982d795c9…

MALICIOUS

PDF

41.1 KB Created: 2020-08-11 22:50:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4783d78209095472c57431051d2d63d0 SHA-1: 37ef62d2a740706d83aeb6e6278773bc70bf8b9b SHA-256: f05367f982d795c9981ec0d296b0fa26992d503f488b1ef459d22bfccfb09852
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with the primary URL pointing to a known malicious redirector. The heuristic firings indicate that this PDF is part of a link farm, likely intended for SEO manipulation or to distribute malicious content. The document body itself is largely unreadable binary data, but the presence of the malicious URL is a strong indicator of malicious intent.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.ru/pify?keyword=aptis+advanced+test+sample+pdf
    • http://dojotopo.bluffsplus.com/uploads/1/3/0/7/130740072/demevejaga.pdf
    • http://duxusifur.crescentboatclub.com/uploads/1/3/0/7/130738638/gumutazalisutefabu.pdf
    • http://files.zionlutherancc.com/uploads/1/3/0/8/130873855/f18cfedf4a778.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/how_to_make_a_suspicious_looking_eye.pdf
    • https://cdn.shopify.com/s/files/1/0434/4109/4817/files/39580859456.pdf
    • https://cdn.shopify.com/s/files/1/0433/0297/7700/files/wixapezujutogi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4074/3329/files/2020_bmw_x5_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0242/0644/files/40970190267.pdf
    • https://cdn.shopify.com/s/files/1/0435/2330/9727/files/78757669332.pdf
    • https://cdn.shopify.com/s/files/1/0428/8361/2831/files/vokuwurinexoru.pdf
    • https://cdn.shopify.com/s/files/1/0438/9833/9496/files/32337911726.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19085525902.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0165/files/duwezesu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20726054751.pdf
    • https://cdn.shopify.com/s/files/1/0429/2067/3433/files/javascript_double_click.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/93871379985.pdf
    • https://cdn.shopify.com/s/files/1/0431/8121/1802/files/kanelovegaveki.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063b3.bin
f2088f15cfe115f3c5e51fc645fb9d2878e83a2fb39a7e0b872120fb69c585d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63B3 5252 bytes
font_01_sfnt_off0000757f.bin
e4992c90c0873fbfb07fc5d115f8c6ecf0199ad61c81e96c498d88b0b4a2d8e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x757F 9936 bytes

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