Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0f784589952cebb…

MALICIOUS

PDF

41.3 KB Created: 2020-08-03 06:02:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5025a68516f7f040cbb480162767fd15 SHA-1: a23f68a5c4383d551780ffe915c3d8fd06d96feb SHA-256: b0f784589952cebbfb80d8c8f50c388bf678ec50a80c25995c7f47402023d6b0
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) known for malicious activity. The document body, though partially corrupted, suggests a lure related to 'free magazine pdf download sites'. The primary heuristic indicates the PDF is a malicious redirector, and the presence of numerous links supports this, aiming to lead users to potentially harmful content.

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=free+magazine+pdf+download+sites
    • http://files.connecticutgolfacademy.com/uploads/1/3/1/6/131637178/wonujipik.pdf
    • http://lateborig.centerforhealthydevelopment.org/uploads/1/3/1/0/131071243/32377cb9f3da019.pdf
    • http://renukigeg.balticsportsciencesociety.com/uploads/1/3/0/8/130874064/b03d364.pdf
    • https://cdn.shopify.com/s/files/1/0433/7614/8641/files/mtg_arena_could_not_access_network_location.pdf
    • https://cdn.shopify.com/s/files/1/0438/0921/0529/files/super_mario_bro.pdf
    • https://cdn.shopify.com/s/files/1/0433/4206/9918/files/gibadi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4055/5687/files/33298255129.pdf
    • https://cdn.shopify.com/s/files/1/0434/2461/2508/files/soxobuwes.pdf
    • https://cdn.shopify.com/s/files/1/0431/1554/4737/files/setunuf.pdf
    • https://cdn.shopify.com/s/files/1/0437/2499/6773/files/surevibujaxolofabuwik.pdf
    • https://cdn.shopify.com/s/files/1/0430/7140/6241/files/koriwik.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5304/files/machine_design_an_integrated_approach.pdf
    • https://cdn.shopify.com/s/files/1/0431/5856/9120/files/shrug_copy_paste.pdf
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/72618325887.pdf
    • https://cdn.shopify.com/s/files/1/0432/0398/5570/files/63258111391.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zupapinited.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_off0000632f.bin
314afb82506fc733033caea9ab10cb578bec0e2da65899b72b9b7ac008dfb501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x632F 5456 bytes
font_01_sfnt_off000075ca.bin
c33fda1161ce555518cfdb9b28c798c88ce2703320dc5766d183673257675335		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75CA 10084 bytes

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