Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9881d30e69bf1f5…

MALICIOUS

PDF

32.4 KB Created: 2020-09-17 03:58:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b095d27334137255594d52fb24ef927 SHA-1: ca4dc00ada4685674c9b9b65e23b748a9e7badcb SHA-256: c9881d30e69bf1f5c3dc892baa053e3efb3f59d48ca9f05f1bcbdfadea4f47a4
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with at least one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.me/wix?keyword=dbd+monitor+and+abuse+legion', which is flagged as malicious. This suggests the document's primary purpose is to lure users to malicious websites through a link farm. No scripts were extracted, and the PDF structure itself is not inherently malicious beyond the embedded links.

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.me/wix?keyword=dbd+monitor+and+abuse+legion
    • http://verul.jasminedanker.com/uploads/1/3/1/6/131637896/f1d6d4a6.pdf
    • http://files.ascension.foundation/uploads/1/3/1/0/131070173/maverejabogav.pdf
    • http://files.imagesbytimhammond.com/uploads/1/3/1/3/131378776/vuwujabapej_biwuxevifu.pdf
    • https://357c084e-71e6-40af-8b83-297a8dc89711.filesusr.com/ugd/3283b0_ea3eea5b30f04dda98360a812a6d2c23.pdf?index=true
    • https://d416abf1-f6f1-4eab-9134-5852218da297.filesusr.com/ugd/135178_2a863d05bd06416e8d3996c642f64a15.pdf?index=true
    • https://56b85d29-b396-4f92-a649-bf00852e7e83.filesusr.com/ugd/417718_30229414babd4ee2b8240e879fcb2933.pdf?index=true
    • https://b80bd34d-31fd-44c2-85df-295c744ab47c.filesusr.com/ugd/98e298_39ffcdebd73f49ac9c24107de4eaf60f.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0452/8999/6450/files/transformers_arcee_sisters.pdf
    • https://cdn.shopify.com/s/files/1/0435/8324/2401/files/sezasino.pdf
    • https://cdn.shopify.com/s/files/1/0435/5470/1463/files/ansiedad_y_depresion_en_el_adulto_mayor.pdf
    • https://cdn.shopify.com/s/files/1/0431/2642/3701/files/91540818015.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_off00004357.bin
e3745da7efd0e4732214264d35a88e52804e1f3aecd6ca587622ed66a5a350a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4357 5284 bytes
font_01_sfnt_off0000552d.bin
a048f873379356afb054440ea121a8de304f8e71063ead762d640fd2b43c004c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x552D 9384 bytes

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