Malicious PDF — malware analysis report

Static analysis result for SHA-256 36df76a24e0141d9…

MALICIOUS

PDF

40.9 KB Created: 2020-08-14 22:18:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5607a00a5f12615b3a7c7e081e242d94 SHA-1: ada4eba5327a3d43f79c620a8f0a63413389f987 SHA-256: 36df76a24e0141d998d03f8b0ae8f93372ee58c02403260a647a7f6348c9e4b2
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector pointing to 'https://ttraff.ru/pify?keyword=preposition+of+time+exercises+with+answers+doc'. This suggests the document is designed to lure users to a malicious site, likely for phishing or malware distribution. The presence of numerous external links, many hosted on Shopify, indicates a link farm strategy to improve search engine ranking for malicious content.

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/pify?keyword=preposition+of+time+exercises+with+answers+doc
    • http://xubob.saintmarkmusicpress.com/uploads/1/3/1/3/131380349/035439843f5a7d.pdf
    • http://wolana.izzysfrozenyogurtandicecreamnh.com/uploads/1/3/0/7/130739777/1999183.pdf
    • http://vodeti.rosewoodtrading.com/uploads/1/3/1/3/131398367/suvogomezakipigo.pdf
    • http://files.troyboatclub.org/uploads/1/3/1/8/131871852/nuxivisaxixudaturare.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/55423768071.pdf
    • https://cdn.shopify.com/s/files/1/0437/6539/9713/files/pakedob.pdf
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/38909426841.pdf
    • https://cdn.shopify.com/s/files/1/0429/6487/7475/files/fujifilm_finepix_s_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/7976/1061/files/21519139671.pdf
    • https://cdn.shopify.com/s/files/1/0437/1070/9915/files/decode_base64_to_javascript.pdf
    • https://cdn.shopify.com/s/files/1/0432/3291/9720/files/vowiluralopibixod.pdf
    • https://cdn.shopify.com/s/files/1/0434/3260/7894/files/zefolakegipitesolik.pdf
    • https://cdn.shopify.com/s/files/1/0437/6009/1287/files/blasphemy_law_in_islam.pdf
    • https://cdn.shopify.com/s/files/1/0431/5339/1765/files/fagafegupovimuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/7849/2062/files/wawir.pdf
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/durevaxizadowatuviguraj.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_off0000622e.bin
429540cf0843b001a4e3d4506bb7efb6cd2b346384c8d7cc11e907b952bd2d58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x622E 5524 bytes
font_01_sfnt_off000074d6.bin
14730e0cf7f7361a81026f4e87d0ad39cb4112db052ab4c021d978c49b75aade		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74D6 9788 bytes

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