Malicious PDF — malware analysis report

Static analysis result for SHA-256 57103a7d638445cf…

MALICIOUS

PDF

46.1 KB Created: 2020-08-30 14:05:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aae89791cebaad322730710761f97a62 SHA-1: 246f281d3e3f76adab0afe0b7edd3a6a9a84d886 SHA-256: 57103a7d638445cf4008eec5238b3f5c454ff89cb7a0ec120f249b0cd2106336
150 Risk Score

Malware Insights

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

The PDF contains a prominent link that, when clicked, redirects to a malicious URL hosted on 'ttraff.ru'. This URL is associated with a redirector, indicating an attempt to lead the user to a harmful destination. The document body, though partially corrupted, contains text related to 'revertir la diabetes pdf descargar gratis', suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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/wix?keyword=revertir+la+diabetes+pdf+descargar+gratis
    • https://cdn.shopify.com/s/files/1/0439/0574/5051/files/46362923535.pdf
    • https://cdn.shopify.com/s/files/1/0430/4620/7650/files/fowubib.pdf
    • https://cdn.shopify.com/s/files/1/0430/9801/3845/files/wings_of_fire_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/53541537312.pdf
    • https://static.usrfiles.com/ugd/b65acf_971753a08c1040e19f0e554580ccd428.pdf
    • https://static.usrfiles.com/ugd/9904c2_ab698cd339f44360978fe92daa2d0f61.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc5f17f1c9a64ac3bf44c0439541038a.pdf
    • https://static.usrfiles.com/ugd/d775a9_ce58d659f3834e37b3c86b3f4bf9b1d2.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_off0000663b.bin
71db172c1e1d89bfbae8916d91bb8f28a26d32b2f3e8e58b21459e7495ad1641		 pdf-font-stream PDF embedded font (sfnt) at offset 0x663B 5528 bytes
font_01_sfnt_off0000791c.bin
0e9b02cfca80bc08e23f28d6aeedccd6b8c122d52aa2502b966bb133feef0523		 pdf-font-stream PDF embedded font (sfnt) at offset 0x791C 16256 bytes

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