Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad2a457825327b59…

MALICIOUS

PDF

44.9 KB Created: 2020-08-15 11:31:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c6783442887e519349f7a80c3e83c63 SHA-1: fe48b6f4768cb3a914089447a13c66f5ff3100fc SHA-256: ad2a457825327b5996f6692358a84735123dc138df20f984bb5cc32199a8d77f
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.com/wb?keyword=trig%20table%20of%20values%20pdf'. The document body, though heavily obfuscated, contains text related to 'trig table of values pdf', suggesting a lure to disguise the malicious intent. The presence of numerous other links, many pointing to benign Shopify URLs, indicates a link farm strategy to obscure the malicious destination.

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.com/wb?keyword=trig%20table%20of%20values%20pdf
    • http://files.cdcatparker.com/uploads/1/3/1/4/131437886/gukebizerivajijafep.pdf
    • https://cdn.shopify.com/s/files/1/0433/6284/4837/files/dugopolski_trigonometry_4th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/1403/6376/files/75027139847.pdf
    • https://cdn.shopify.com/s/files/1/0433/6327/0815/files/17821564833.pdf
    • https://cdn.shopify.com/s/files/1/0432/2374/4674/files/2d_animation_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/78858980797.pdf
    • https://cdn.shopify.com/s/files/1/0434/0894/9402/files/15036813013.pdf
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/three_letter_usernames.pdf
    • https://cdn.shopify.com/s/files/1/0438/2438/2114/files/14273795145.pdf
    • https://cdn.shopify.com/s/files/1/0432/8282/5382/files/58156395235.pdf
    • https://cdn.shopify.com/s/files/1/0451/3605/2389/files/beltron_deo_syllabus_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/sasivefuvudejisem.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/vovakidesegovojerapanigiw.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c77.bin
314ebee1a48af2879c8a19903294d7c42e99ae4d73bbb39b239391477921a6d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C77 5360 bytes
font_01_sfnt_off00006ebc.bin
275b66902053d29168f580c18d6e68085f7dcc7a366d378c1b2b276165f23b57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EBC 10104 bytes
font_02_sfnt_off0000919c.bin
9dd161ad083bde31f1785977080a21cd00ffd1d65af7312c0685ba069ea0c2ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x919C 16152 bytes

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