Malicious PDF — malware analysis report

Static analysis result for SHA-256 fef84f0ff8442714…

MALICIOUS

PDF

42.1 KB Created: 2020-08-27 18:40:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c30a2f81097c2c5f9be0c7b9139463c SHA-1: a25a9b65f1fd609fa137af05a40ee5fc2efd0341 SHA-256: fef84f0ff844271440b8ae4f72d683b7da49dbff36ecdacd52e93f79bed087a7
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=diaper+genie+assembly+instructions', likely leads to a malicious site. The document also contains a large number of embedded links, many pointing to Shopify, suggesting a link farm or SEO abuse tactic. The primary intent appears to be redirecting the user to malicious infrastructure under the guise of providing assembly instructions.

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.cc/pify?keyword=diaper+genie+assembly+instructions
    • http://fafovup.cheekyupstart.co.nz/uploads/1/3/2/8/132814930/jezagud-dufinilivali-vusupaluponok.pdf
    • https://cdn.shopify.com/s/files/1/0435/9107/3947/files/68028589196.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4434/files/rukobugunowevu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/gidazigisajenusug.pdf
    • https://cdn.shopify.com/s/files/1/0436/5543/0309/files/lugumu.pdf
    • https://cdn.shopify.com/s/files/1/0435/9372/8158/files/23479339456.pdf
    • https://cdn.shopify.com/s/files/1/0438/6104/9494/files/9839825860.pdf
    • https://cdn.shopify.com/s/files/1/0441/0019/0360/files/rirofediwibutiwujegef.pdf
    • https://cdn.shopify.com/s/files/1/0435/9382/6467/files/the_girl_in_the_flammable_skirt.pdf
    • https://cdn.shopify.com/s/files/1/0432/0237/9939/files/darofepelutagivakovin.pdf
    • https://cdn.shopify.com/s/files/1/0431/0066/8065/files/mewevegazinerolek.pdf
    • https://cdn.shopify.com/s/files/1/0430/7206/1591/files/2833201054.pdf
    • https://cdn.shopify.com/s/files/1/0434/1766/5703/files/rawaginubepikusuvijuw.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_off000065bc.bin
15bc5ee44143dc436e63115778a5756767e2e95707f518ec622292a91ed806f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65BC 5496 bytes
font_01_sfnt_off00007856.bin
fa996d62bff8c7f6bd0007a4d73de54e331371b111018ecb0353bc946a619812		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7856 10272 bytes

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