Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd2c9686fe2cc97b…

MALICIOUS

PDF

42.5 KB Created: 2020-08-18 14:46:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45137b7dbc465510bdfa8fa935bf8b3b SHA-1: 8671c917f8b4d9b72e191fc52082b9479819c88e SHA-256: fd2c9686fe2cc97b9e42cda2ad1b9232448482933159eed1d19980657193f45c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded URLs, with a critical heuristic firing indicating a link farm and a redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=murottal+an+naba+muzammil, which is likely used to obscure the final destination of the attack. The document body itself is heavily obfuscated and contains what appears to be junk data along with some of the URLs. No scripts were extracted from this sample.

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=murottal+an+naba+muzammil
    • http://files.reroutedmusic.com/uploads/1/3/1/6/131606293/7367904.pdf
    • https://cdn.shopify.com/s/files/1/0432/2341/6987/files/efectos_del_alcohol_en_el_cerebro_y_sistema_nervioso.pdf
    • https://cdn.shopify.com/s/files/1/0430/3981/7890/files/boraluzuzijipovedom.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7922/files/action_verbs_cards.pdf
    • https://cdn.shopify.com/s/files/1/0432/5831/4912/files/36028016722.pdf
    • https://cdn.shopify.com/s/files/1/0430/3549/2503/files/vogipejivemotusi.pdf
    • https://cdn.shopify.com/s/files/1/0437/3735/0296/files/composite_materials_for_aircraft_structures_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/0723/6503/files/game_maker_studio_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/demokulufe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6018/2692/files/19857407725.pdf
    • https://cdn.shopify.com/s/files/1/0435/2580/0087/files/download_bastard_devil.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_off00005e46.bin
a1eb68ab7c7fe804fbab80bf5bbb1ad2ef1e4ec969012d772f8afaa3d5e825c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E46 4612 bytes
font_01_sfnt_off00006dd2.bin
dda5e4a4671e8f44effdac3c5e36aca1ec504780e08877dd395533eecb3adc9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD2 9832 bytes
font_02_sfnt_off00008f7a.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F7A 4324 bytes

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