Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffbe612d22864788…

MALICIOUS

PDF

41.3 KB Created: 2020-08-22 01:54:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 404d02aa2adbe62a6325bd64f7ce4d19 SHA-1: 2c66b534ddaf8f3db0703cec61aeaf46d544f118 SHA-256: ffbe612d2286478887690c49829ca3c5de584c6e96d11407a2a6903971c51394
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a heuristic firing indicating a 'PDF_SEO_LINK_FARM'. One of these links, 'https://ttraff.ru/pify?keyword=arcform%25C3%25A1k+%25C3%25A9s+frizur%25C3%25A1k', is flagged as a malicious redirector. The document body appears to be largely obfuscated or corrupted, but the presence of numerous links, including the malicious redirector, strongly suggests a phishing or malicious redirection attempt.

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=arcform%25C3%25A1k+%25C3%25A9s+frizur%25C3%25A1k
    • http://files.chapelgateswimclub.com/uploads/1/3/1/4/131437490/mosakakokira-roperutek-ganixa.pdf
    • http://vubujev.royalinngreenville.com/uploads/1/3/2/8/132814167/gipabofaga.pdf
    • https://cdn.shopify.com/s/files/1/0430/3273/9989/files/38959147748.pdf
    • https://cdn.shopify.com/s/files/1/0431/5355/5624/files/cambridge_objective_pet_student_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/lobit.pdf
    • https://cdn.shopify.com/s/files/1/0438/5079/3122/files/la_casa_de_papel_song.pdf
    • https://cdn.shopify.com/s/files/1/0439/6436/7006/files/burunep.pdf
    • https://cdn.shopify.com/s/files/1/0432/4222/5832/files/95685087994.pdf
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/16281298447.pdf
    • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/5727325415.pdf
    • https://cdn.shopify.com/s/files/1/0433/3889/1419/files/jigig.pdf
    • https://cdn.shopify.com/s/files/1/0457/5743/1964/files/ischmie_msentrique.pdf
    • https://cdn.shopify.com/s/files/1/0434/6455/6710/files/famob.pdf
    • https://cdn.shopify.com/s/files/1/0429/5553/8595/files/81495056689.pdf
    • https://cdn.shopify.com/s/files/1/0443/1101/9676/files/68907060612.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0757/files/zowejexetefobi.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_off0000619c.bin
39868001d7668e4b74338937cad1d35612f8112f2fe562bcc2e033ceca287813		 pdf-font-stream PDF embedded font (sfnt) at offset 0x619C 5264 bytes
font_01_sfnt_off00007323.bin
8b117f168420466ec93197f38da9312b28ec8320942d6da009e9767c9762147e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7323 11436 bytes

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