Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2a4b19eb96c0426…

MALICIOUS

PDF

43.5 KB Created: 2020-08-26 03:30:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89fb846d18e6e291d19c3bd85d80582a SHA-1: 91f48c709f678a9584d475389d6346a21484774d SHA-256: d2a4b19eb96c0426a536dddd7415cf3ef026add6be44192a3890436ef7a9d92c
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=wheelock%2527+s+latin+7th+pdf', reinforcing the malicious redirector finding. The primary attack pattern involves luring the user to click this malicious link.

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/pify?keyword=wheelock%2527+s+latin+7th+pdf
    • http://files.tracygardnerbeno.com/uploads/1/3/0/7/130775808/998790c7ce82.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/naxetol.pdf
    • https://cdn.shopify.com/s/files/1/0434/5721/6678/files/auberdine_flight_master.pdf
    • https://cdn.shopify.com/s/files/1/0432/9455/6324/files/fifijipabuvitovomuga.pdf
    • https://cdn.shopify.com/s/files/1/0447/0718/4793/files/25729629201.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/lojexinutolag.pdf
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/famefopabaxawekotizusum.pdf
    • https://cdn.shopify.com/s/files/1/0429/6789/2131/files/let_it_go_piano_accompaniment.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1703/files/momotatul.pdf
    • https://cdn.shopify.com/s/files/1/0465/0709/8262/files/6784187022.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/migetinirojarupadarubi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3115/8175/files/tecumseh_engine_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/0345/9230/files/schema_ampli_audio_a_transistor.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_off00006ae6.bin
4c440825c37b8f6bf9f5957622299613c04e47a47a258515eb8fdb21237a95ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE6 5336 bytes
font_01_sfnt_off00007d29.bin
5379ffb0b68b786e6cbb8c82cebe6e003ddf01f2cd83ffa98a6803c6f2ed3c92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D29 10740 bytes

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