Malicious PDF — malware analysis report

Static analysis result for SHA-256 2611cd2b6f9abf0a…

MALICIOUS

PDF

51.0 KB Created: 2020-08-30 06:01:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d11b4e9d9a3bdc430c558a448d36182 SHA-1: 3a9c3e8542fe116e8285f6301202b6f84c9dd845 SHA-256: 2611cd2b6f9abf0a1cff1b0bfc9a115c1073bf003f90864ba8662830b3bc9f4b
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=the+encyclopedia+of+game+machines+pd'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on shopify.com. The document body itself is heavily obfuscated and appears to contain the malicious URL embedded within it. These factors suggest a coordinated effort to lure users to a malicious site.

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=the+encyclopedia+of+game+machines+pd
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/casio_hr_100tm_ink.pdf
    • https://cdn.shopify.com/s/files/1/0434/5276/0224/files/jusulalezipe.pdf
    • https://cdn.shopify.com/s/files/1/0432/2502/2621/files/gipafi.pdf
    • https://static.usrfiles.com/ugd/5be868_7a86f7c6a0fe4126af378fe8cd919627.pdf
    • https://cdn.shopify.com/s/files/1/0430/0318/3258/files/attestation_d_hbergement_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0432/6660/5219/files/calculus_early_transcendentals_briggs_cochran.pdf
    • https://cdn.shopify.com/s/files/1/0447/5827/0101/files/chromatin_immunoprecipitation.pdf
    • https://cdn.shopify.com/s/files/1/0440/9180/1752/files/marriage_d_amour_piano_notes.pdf
    • https://cdn.shopify.com/s/files/1/0465/0221/5838/files/donnie_darko_megavideo.pdf
    • https://static.usrfiles.com/ugd/469aea_c823785b92174b21bfdca9f3140d86a0.pdf
    • https://static.usrfiles.com/ugd/81d6a4_6e171e2835904ceebd6e05fce14f89c6.pdf
    • https://static.usrfiles.com/ugd/1be480_5c3a217929664c95be7c3af6b51f89f4.pdf
    • https://static.usrfiles.com/ugd/bf650e_087e71957eba4a50abe8f98fa319184e.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_off000089a6.bin
4da74ee4a30d13fc5c29389f12bd2e6c8c57d11ac1a977931a1c6211449295c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89A6 5524 bytes
font_01_sfnt_off00009c50.bin
d9b16df9186c9b0887bd4d0c1a024acfce6817924a175b188234f4d03425f7de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C50 10240 bytes

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