Malicious PDF — malware analysis report

Static analysis result for SHA-256 5353fe152d3ca40e…

MALICIOUS

PDF

41.6 KB Created: 2020-08-17 08:39:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 851fe4e4cd30d0d29b0914b4fdd9203e SHA-1: 6b5aba68cce05cc8f02538d350a3952110df0aab SHA-256: 5353fe152d3ca40e15299448f7fef16e34926ce519d1a7495501c559bf90ef23
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body itself is heavily obfuscated but contains the same malicious URL. This suggests the PDF is part of a link farm or SEO manipulation scheme designed to redirect users to malicious sites.

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=gallbladder+operation+video
    • http://files.publishershaven.com/uploads/1/3/1/4/131406744/1ab589685fe7b92.pdf
    • http://files.anytimemovers.com/uploads/1/3/1/4/131437295/marodugadod.pdf
    • http://files.attadalerotary.com/uploads/1/3/1/3/131380547/sunoma_jozotudi_kaluwatil_vifora.pdf
    • http://files.goodbless.us/uploads/1/3/0/9/130969424/xopixedawareda-wowukutozi-fevasutu-sekaligupoxijek.pdf
    • https://cdn.shopify.com/s/files/1/0438/7789/2264/files/richard_bandler_and_john_grinder.pdf
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/83867801765.pdf
    • https://cdn.shopify.com/s/files/1/0436/7689/3334/files/latex_in_jupyter_notebook.pdf
    • https://cdn.shopify.com/s/files/1/0437/1510/0840/files/pipepem.pdf
    • https://cdn.shopify.com/s/files/1/0437/8768/1952/files/26304253087.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9814/files/localhost_8181_home.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4551/files/74867438807.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/biotage_selekt.pdf
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/brazil_football_song_video.pdf
    • https://cdn.shopify.com/s/files/1/0443/2376/6428/files/character_of_darcy_in_pride_and_prejudice.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_off000065e6.bin
f00e1c8874e0992c3619cb29cb71e9929cd74c8ebb70eda96bdc2d413c635bf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E6 5004 bytes
font_01_sfnt_off00007700.bin
612a89bdd591658207e139212480c3c78521dc1707af90dcafd2f32375023787		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7700 10240 bytes

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