Malicious PDF — malware analysis report

Static analysis result for SHA-256 d333c18df2ee860f…

MALICIOUS

PDF

57.3 KB Created: 2020-09-06 22:06:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8500df96c3b8545de2eeafc7a53a8ee8 SHA-1: 97a75e63ebbea615b9503f40c82d60f6c5949fe5 SHA-256: d333c18df2ee860ff1cec5a7ba4f8cbc179abe6d9a0b0e01726365c4982ea5f3
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body text, though partially corrupted, suggests a lure related to a 'Boxers diet plan pdf'. The PDF also contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic, which is a common tactic for SEO poisoning or distributing malicious content. The primary malicious IOC is the redirector URL.

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=boxers+diet+plan+pdf
    • https://cdn.shopify.com/s/files/1/0430/7222/5442/files/kunuxugawego.pdf
    • https://cdn.shopify.com/s/files/1/0437/0235/4070/files/minecraft_1._8_mods_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20011772627.pdf
    • https://cdn.shopify.com/s/files/1/0431/1888/7073/files/algebra_1_regents_practice_questions_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/1942/6197/files/vozujegiwotit.pdf
    • https://static.usrfiles.com/ugd/1decf9_74375c777e6a4b18b946240c4d074396.pdf
    • https://static.usrfiles.com/ugd/808d8c_9593bc9376104cbc9c55875e330cce65.pdf
    • https://static.usrfiles.com/ugd/b8c837_586c6ddbf21b4be0819c4a3147e48636.pdf
    • https://static.usrfiles.com/ugd/44b221_ffea25a382bf4ec790779b0eb1ee3232.pdf
    • https://static.usrfiles.com/ugd/88a84f_d4cbec077d5e4693a05255542706ce5b.pdf
    • https://static.usrfiles.com/ugd/cc3ca9_117c3d59bef44f3e9a7750c2e37b9ff9.pdf
    • https://static.usrfiles.com/ugd/aff7ca_8d8d9adfafe24ec8bd9c29ec251ef8ff.pdf
    • https://static.usrfiles.com/ugd/32acb1_722bb4a17505483e9af3b23a47963835.pdf
    • https://cdn.shopify.com/s/files/1/0432/9907/8299/files/dewugunojolevugirasoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/1118/6585/files/22609958190.pdf
    • https://cdn.shopify.com/s/files/1/0427/9356/6364/files/negeruloku.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_off0000a3d0.bin
2e211d2b000af190c3c54aaa8702cc83cb5b4d4ef2da48364b0bfa7c4dbad52a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3D0 5152 bytes
font_01_sfnt_off0000b56b.bin
8c1334c626883394de0a8456d44c420ec9b2419f30098b8cbbbdaaf3d7d5eea9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB56B 10192 bytes

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