Malicious PDF — malware analysis report

Static analysis result for SHA-256 43759a4e7e01f4d9…

MALICIOUS

PDF

46.0 KB Created: 2020-08-20 02:20:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9f1403717edeba2ed7214e4766c6502 SHA-1: 3798f54fe0526f05ad1476fc2426bdcd57cc7534 SHA-256: 43759a4e7e01f4d967a4db7629ddedb4bbdd35fd608718a40a92f882c125b3bf
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many hosted on Shopify, designed to appear as legitimate resources but ultimately redirecting to a malicious URL. The primary malicious URL identified is https://ttraff.ru/pify?keyword=apex+legends++ea+games, which is flagged as a known malicious redirector. The document body contains obfuscated text and embedded URLs, suggesting an attempt to disguise the malicious intent and potentially leverage SEO tactics to attract victims.

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.ru/pify?keyword=apex+legends++ea+games
    • http://files.juniorhistorians.com/uploads/1/3/0/7/130775950/lopigoxi-detubas.pdf
    • https://cdn.shopify.com/s/files/1/0431/7023/4527/files/74419181983.pdf
    • https://cdn.shopify.com/s/files/1/0432/0460/8155/files/50050172569.pdf
    • https://cdn.shopify.com/s/files/1/0431/0102/8503/files/96528879483.pdf
    • https://cdn.shopify.com/s/files/1/0434/7451/8178/files/26973507668.pdf
    • https://cdn.shopify.com/s/files/1/0433/8991/1194/files/70816234639.pdf
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/tufatuwilujelogevupore.pdf
    • https://cdn.shopify.com/s/files/1/0438/4754/9088/files/southwestern_college_map.pdf
    • https://cdn.shopify.com/s/files/1/0434/3712/9895/files/the_complete_idiot_s_guide_to_native_american_history.pdf
    • https://cdn.shopify.com/s/files/1/0427/7927/9527/files/pupuki.pdf
    • https://cdn.shopify.com/s/files/1/0435/3051/8679/files/53080933516.pdf
    • https://cdn.shopify.com/s/files/1/0429/7523/2153/files/83235332938.pdf
    • https://cdn.shopify.com/s/files/1/0432/8400/5032/files/tinkle_double_digest_1.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_off00006a5a.bin
6d11b310057b0570d23fd5f3f29ad6c5d0b1299578553cc729b060e445d24f84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5A 4788 bytes
font_01_sfnt_off00007a85.bin
0195f79d1f5c81a7a7ae90dd8cd543c06537ab27e441b88e2c72e1cc209dcf4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A85 10144 bytes
font_02_sfnt_off00009d33.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D33 4324 bytes

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