Malicious PDF — malware analysis report

Static analysis result for SHA-256 349353d4f66ae8e0…

MALICIOUS

PDF

42.0 KB Created: 2020-09-17 17:17:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe2e3cfdfada87623656b10f2b753801 SHA-1: 95abcd7ec1252e04b90f98bd4bb7edeee9283204 SHA-256: 349353d4f66ae8e0b58bb0c6e7b1acd02e4f857c664136f21816a25e3c3edb09
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, identified as a PDF link farm. One of these links points to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be part of this malicious infrastructure. The primary attack pattern involves luring users to malicious sites through a deceptive link farm.

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.club/wix?keyword=problem+dns+lookup
    • http://fopiwov.carolinaconjure.com/uploads/1/3/0/7/130739590/5920171.pdf
    • http://vovifu.helpforpeace.org/uploads/1/3/0/8/130814328/kuvikida_kolux.pdf
    • https://cdn.shopify.com/s/files/1/0461/4186/6137/files/pumetarodebifaperikelurux.pdf
    • https://cdn.shopify.com/s/files/1/0433/9659/5870/files/30317479302.pdf
    • https://cdn.shopify.com/s/files/1/0440/5241/4614/files/sherlock_holmes_movie_in_telugu_720p.pdf
    • https://cdn.shopify.com/s/files/1/0454/4672/5790/files/25351471912.pdf
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/fobuzulakovimatixa.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1932/files/airasia_berhad_annual_report_2014.pdf
    • https://cdn.shopify.com/s/files/1/0436/1610/8701/files/57343573662.pdf
    • https://2902f82c-84ff-43bc-a6f1-cb3493277f1b.filesusr.com/ugd/882da0_c12835a831f84fef94e31141fa304cd3.pdf?index=true
    • https://edaa26d1-4223-43e1-bc33-acc1dcc9debe.filesusr.com/ugd/1a94e8_4a2dc881e7734e1e895b55445c67ee47.pdf?index=true
    • https://0dd51378-7af9-46cd-9c6b-22708ad317a2.filesusr.com/ugd/b0c8dc_5211d844624c4fa49c0e06ad428db97f.pdf?index=true
    • https://c1f6d15c-c893-4558-b68e-9245153e4477.filesusr.com/ugd/bd5c68_b2123229a6cc48459c4d4ebef4b38156.pdf?index=true
    • 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_off00006532.bin
b8b0f7e5bfa997e97398b634c1c082266809d7a4547a32044bcee48a9bdeb379		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6532 5100 bytes
font_01_sfnt_off00007670.bin
3b72821a27a48c19fc3ef138e3e474110a8d2b6e73a2fe27e401da63bb7d812e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7670 10948 bytes

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