Malicious PDF — malware analysis report

Static analysis result for SHA-256 404e772a9ee12910…

MALICIOUS

PDF

64.2 KB Created: 2020-08-16 16:42:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69082864547aafc989a5b2b200cd6015 SHA-1: c24462a99a2990b654d8d66af224705aecd2923a SHA-256: 404e772a9ee12910eab4d9b10e4fc35ee0adf95a2bd10e60a7208a357559f7d3
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link https://ttraff.com/pify?keyword=kh2fm+synthesis+guide is part of known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic further suggests a large number of external links, many hosted on cdn.shopify.com, which are likely used to obscure the malicious redirector or for SEO poisoning. The document body contains the target URL, confirming its presence within the file content.

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=kh2fm+synthesis+guide
    • http://files.coletteliebenberg.com/uploads/1/3/1/4/131437044/9849824.pdf
    • https://cdn.shopify.com/s/files/1/0433/2647/2345/files/9720958109.pdf
    • https://cdn.shopify.com/s/files/1/0429/4026/8711/files/24244730075.pdf
    • https://cdn.shopify.com/s/files/1/0427/9877/6487/files/xobisugajulafadev.pdf
    • https://cdn.shopify.com/s/files/1/0429/2519/5427/files/gastroesophageal_reflux_disease_diet.pdf
    • https://cdn.shopify.com/s/files/1/0439/0515/5227/files/vocabulary_games_and_activities_for_teachers.pdf
    • https://cdn.shopify.com/s/files/1/0430/7428/9813/files/latomuzulekigelilusow.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/87933194532.pdf
    • https://cdn.shopify.com/s/files/1/0428/5048/4390/files/engineering_drawing_handbook_hb7.pdf
    • https://cdn.shopify.com/s/files/1/0430/9804/6621/files/2593130001.pdf
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/waledokidoluzaki.pdf
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/ansys_mechanical_apdl_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/6707/9830/files/zokilonutabadorenokizoxi.pdf
    • https://cdn.shopify.com/s/files/1/0436/8121/8710/files/libro_camilo_cienfuegos.pdf
    • https://cdn.shopify.com/s/files/1/0435/7586/9603/files/vogel_s_approximation_method_problems.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_off0000b36b.bin
705b6a225b02d72d0f2b7765c6f6881337ddd907e84cd3b83bf40e7961c15477		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB36B 5188 bytes
font_01_sfnt_off0000c506.bin
ff657a20a09b27705537b18da5d0467cce72651c4bfd6f2783554be9c4b83284		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC506 15240 bytes

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