Malicious PDF — malware analysis report

Static analysis result for SHA-256 07c1be2b876ef740…

MALICIOUS

PDF

43.2 KB Created: 2020-08-31 17:20:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9904aed2f1ce75d6da02366dfe7d0fe SHA-1: 71ea247a167af382ffab417ecd4f6ee1c327a316 SHA-256: 07c1be2b876ef7406f0ea3afbb82842822765de554f94ddb19f6f9cdf6d14557
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a link farm designed to appear as search results for popular content, such as movies, to entice users to click. The primary malicious link identified is `https://ttraff.ru/wix?keyword=arya+2+movie+hd+1080p+free`, which is flagged as a known malicious redirector. The document body is heavily obfuscated and contains numerous embedded URLs, many pointing to benign Shopify domains, but the overall structure suggests a malicious intent to redirect users to harmful sites. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=arya+2+movie+hd+1080p+free
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0444/6345/6423/files/metetoxonanu.pdf
    • https://cdn.shopify.com/s/files/1/0439/4136/3870/files/the_kooples_size_guide_uk_mens.pdf
    • https://cdn.shopify.com/s/files/1/0429/9702/2871/files/siwazamupufin.pdf
    • https://cdn.shopify.com/s/files/1/0434/4496/1436/files/make_sheets_visible_vba.pdf
    • https://static.usrfiles.com/ugd/b8c837_879b8725eb8b4873a9972f7b9620de61.pdf
    • https://static.usrfiles.com/ugd/739437_4469016218fd40d587b1e0b7db7d1042.pdf
    • https://static.usrfiles.com/ugd/b8c837_12aba08e840a499e9130b786897c4b04.pdf
    • https://cdn.shopify.com/s/files/1/0439/0787/4984/files/85391027016.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasidobedibugamis.pdf
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/matlab_5th_edition_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0466/3479/5173/files/easy_hard_riddles_with_simple_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/2499/7800/files/heroes_of_the_storm_stats.pdf
    • https://cdn.shopify.com/s/files/1/0434/6963/5746/files/how_to_setup_nightbot_on_twitch.pdf
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/dedelavabebi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5181/8903/files/selid.pdf
    • https://cdn.shopify.com/s/files/1/0435/4709/9290/files/free_able2extract_portable.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062e9.bin
a3f6650ceb00ba96bf7e0dca991efcfc1a928282299a84566eed9d96c12741a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62E9 5740 bytes
font_01_sfnt_off00007662.bin
b02623aac28869d0c253985e4f899c35b827bc3321c738dc4cdc3252b5583789		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7662 13188 bytes

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