Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfb24875cc818070…

MALICIOUS

PDF

46.6 KB Created: 2020-08-25 14:50:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ec7619ef30a5c790ce7957cd5a285fc SHA-1: ab376a78f573980a80f1c1edac2d47ec10e53bf0 SHA-256: cfb24875cc81807081b505b24c4b3eb44a034740c6bb0314d81a6379d68b2b53
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing numerous embedded URLs pointing to external PDF documents. One of these URLs, 'https://ttraff.ru/pify?keyword=beefeater+ceremonial+uniform', is flagged as a known malicious redirector. The primary intent appears to be SEO manipulation or user redirection to potentially harmful sites, rather than direct content delivery.

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=beefeater+ceremonial+uniform
    • http://files.planetmediapresspublications-newcomsystems.com/uploads/1/3/2/3/132302995/3583888.pdf
    • http://files.dovetailmt.com/uploads/1/3/1/6/131636577/2573441.pdf
    • http://files.heavyrent.nl/uploads/1/3/0/8/130814110/15458c528e0.pdf
    • http://jorabud.scgpaulette.com/uploads/1/3/1/4/131483281/7589725.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4434/files/54333617230.pdf
    • https://cdn.shopify.com/s/files/1/0434/0298/5637/files/wuthering_heights_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/2001/6021/files/nuworivelupowebotetet.pdf
    • https://cdn.shopify.com/s/files/1/0446/3663/5299/files/eenadu_epaper_online_today.pdf
    • https://cdn.shopify.com/s/files/1/0429/6101/0842/files/68694194107.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/tanoladasosozekekoz.pdf
    • https://cdn.shopify.com/s/files/1/0438/9906/0392/files/pukijiko.pdf
    • https://cdn.shopify.com/s/files/1/0430/0773/8019/files/xivupevexidetaxazesofik.pdf
    • https://cdn.shopify.com/s/files/1/0431/5955/2155/files/rpf_ancillary_result.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2901/files/jexosukuwuvagetasifamubel.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_off00007ad2.bin
f8f141acb365b3e3104b9683acd4b3df293f15ef247140782694133310b77927		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD2 4900 bytes
font_01_sfnt_off00008b5e.bin
342f3b14bcf31e96b9e8989fafb91c7c860ca17c8492814735f78cfbbc2ca4f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B5E 10152 bytes

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