Malicious PDF — malware analysis report

Static analysis result for SHA-256 17704727e1cd64b9…

MALICIOUS

PDF

44.6 KB Created: 2020-08-07 00:58:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b80a6f909537d025479c70dedaac3b5 SHA-1: 2b2b16078beba9f5be91ee936e5a2b8c6c1eb06b SHA-256: 17704727e1cd64b960349f6d4af36659b0b1db026c50969583611d90166925ea
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.cc/pify?keyword=language+hacking+spanish+benny+lewis+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to trick users into visiting malicious infrastructure. The presence of many external links, some benign and some unknown, indicates a potential link farm or content-scraping operation.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.cc/pify?keyword=language+hacking+spanish+benny+lewis+pdf
    • http://files.physiotherapyequipmentcenter.com/uploads/1/3/0/7/130775737/fopibito_vafovadobi.pdf
    • http://files.thutupallilab.com/uploads/1/3/1/6/131606262/3184677.pdf
    • http://files.blackprince.hu/uploads/1/3/1/8/131856358/vixidomixuwanab.pdf
    • http://files.brendadillon.com/uploads/1/3/0/9/130969265/7704142.pdf
    • http://mefuwo.whitehallstringquartet.com/uploads/1/3/0/7/130739654/70669.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/2050/9596/files/75815042356.pdf
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/pejidufesigenadid.pdf
    • https://cdn.shopify.com/s/files/1/0435/7668/8798/files/yamaha_ydp_223.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0439/files/67295736581.pdf
    • https://cdn.shopify.com/s/files/1/0429/4252/9695/files/basic_biblical_hebrew.pdf
    • https://cdn.shopify.com/s/files/1/0437/1415/0565/files/rodenuzoderirevutif.pdf
    • https://cdn.shopify.com/s/files/1/0430/4103/0293/files/52901954696.pdf
    • https://cdn.shopify.com/s/files/1/0431/1502/0448/files/lakowamejidufepivijiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8120/files/jekerajemol.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/1997_bmw_328i_convertable.pdf
    • https://cdn.shopify.com/s/files/1/0431/6571/2535/files/circle_of_life_elton_john_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41877136991.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d39.bin
46faa8f12ff14bed0357cdfa84fa6822b40eb1560ac2a36653caf1169d4cf1eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D39 5660 bytes
font_01_sfnt_off00008098.bin
8d3a2f586e359dc245c57da088ae59c4a9ee7842a49e518d7d93889263b31950		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8098 10624 bytes

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