Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6feec740aebe784…

MALICIOUS

PDF

45.2 KB Created: 2020-08-30 20:52:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f8a443f2ed62153a30512be7ea83c26 SHA-1: adb6078563fb5e8e20c866b3b5ce23df16865966 SHA-256: e6feec740aebe7847596db6936bea018de67ed10cb376a635a2bb8f608b2c7f1
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 one identified as a malicious redirector. The heuristic firings indicate this is a link farm designed to distribute malicious content. The primary malicious URL identified is https://ttraff.ru/wix?keyword=nys+wmu+map+with+towns. The document body itself is heavily obfuscated and contains references to this URL, suggesting it's the intended lure.

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=nys+wmu+map+with+towns
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/dabituxezibiduwodiwapel.pdf
    • https://cdn.shopify.com/s/files/1/0429/1310/4035/files/c_k_d_ka_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5798/files/rusesenaxonadulek.pdf
    • https://cdn.shopify.com/s/files/1/0432/2734/9159/files/nekofozifegunaxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9809/5262/files/introduction_to_arabic_letters_and_sounds.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/pojeporokirejex.pdf
    • https://cdn.shopify.com/s/files/1/0435/8127/6319/files/synonyms_for_find.pdf
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/english_grammar_exercises_for_class_6.pdf
    • https://static.usrfiles.com/ugd/516793_3b4154bb58d447afa133831a6a68a79c.pdf
    • https://static.usrfiles.com/ugd/b8c837_6ec1a1d830b44764a98a65e00688bf9c.pdf
    • https://static.usrfiles.com/ugd/b4609a_3689263523ac4af1b41a033c345ac5ed.pdf
    • https://static.usrfiles.com/ugd/906e9f_59ec81066c4140ab85aa016ff631a21c.pdf
    • https://static.usrfiles.com/ugd/b8c837_f5b1d4ade9bb4405915c7c4c70ea93ad.pdf
    • https://static.usrfiles.com/ugd/b8c837_3085bd9acd8b4fec8b03ec193094e59e.pdf
    • https://static.usrfiles.com/ugd/b8c837_3e92215b4e45415382f634a0c6f2f504.pdf
    • https://static.usrfiles.com/ugd/4d400c_3cf62e9c64b94c8c9912b4fe91bb504d.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_off00007088.bin
772269b4f602fdc803a4b613b41b2b130f699fc386fb121c8ba768d0681a0e34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7088 5092 bytes
font_01_sfnt_off000081d2.bin
a989be2ac6dfa86ed0869dc06765a256a05e349c3af3381ccb29836bd6dd41e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81D2 11264 bytes

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