Malicious PDF — malware analysis report

Static analysis result for SHA-256 909c9dcb1517d247…

MALICIOUS

PDF

40.2 KB Created: 2020-08-30 12:19:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a46fc24c4b1267bad243d70ae46ac336 SHA-1: a8e53a2ae7e197ebfb449f56f91c5137beb12317 SHA-256: 909c9dcb1517d24774f35f986ed8d69ee65b33b79ab4932b7a7d09711f518669
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also exhibits a PDF link farm pattern, with numerous links to Shopify-hosted PDFs, likely an SEO manipulation tactic. The primary malicious URL is 'https://ttraff.com/wix?keyword=angel+number+619', which is designed to redirect users to further malicious content. The document body contains garbled text but includes the malicious URL and references to SEO-optimized PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=angel+number+619
    • https://cdn.shopify.com/s/files/1/0431/2432/6564/files/93016340524.pdf
    • https://cdn.shopify.com/s/files/1/0434/7537/0136/files/sukanek.pdf
    • https://cdn.shopify.com/s/files/1/0437/3217/2951/files/autoestima_psicologia.pdf
    • https://cdn.shopify.com/s/files/1/0429/4131/7276/files/xafanenuzitulajovivajemek.pdf
    • https://cdn.shopify.com/s/files/1/0439/2599/5688/files/class_10_english_the_hack_driver_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/5709/4559/files/alphabet_analogy_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/5013/8784/files/56385282528.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/77873477556.pdf
    • https://cdn.shopify.com/s/files/1/0464/3219/0616/files/we_wish_you_a_merry_christmas_piano_tutorial_sheet_music_boss.pdf
    • https://cdn.shopify.com/s/files/1/0438/0311/5682/files/simple_and_compound_sentences_worksheet_grade_8.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_off0000609e.bin
f228eeb36485ef7da4b0777a37f43d1a126b73c990aae559f6fc8497d0fb9a41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x609E 5108 bytes
font_01_sfnt_off000071ea.bin
9f89dc58bfb651f35d44441f1f70f19c25be0b06640e1c1486d25587a1a20435		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71EA 10172 bytes

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