Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3781e16bb8ec834…

MALICIOUS

PDF

48.2 KB Created: 2020-08-24 00:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0111a4cc8903b9f12ec2fa3976c8afa SHA-1: 597cc448c7ddb4b6ab8aa7e75bf3ceb451deae6d SHA-256: f3781e16bb8ec834424b818a6237f2bae58f4a86dd8aca1cef9de12dfcdae793
142 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body also contains a callback lure, suggesting a phishing or scam attempt. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a malicious site.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=nail+client+consultation+form+template
    • http://guvojif.dabeedesign.com/uploads/1/3/0/9/130969742/lotimovates.pdf
    • http://files.rifefamily.com/uploads/1/3/2/7/132710772/5069674.pdf
    • http://files.saharasistasols.com/uploads/1/3/1/1/131163658/soxafagebiru_tilulawag_sisinu_fipivozaxifan.pdf
    • https://cdn.shopify.com/s/files/1/0435/4270/8378/files/private_video_facebook_chrome.pdf
    • https://cdn.shopify.com/s/files/1/0431/3510/7233/files/marathi_books_download_file.pdf
    • https://cdn.shopify.com/s/files/1/0429/1877/2903/files/62933377005.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3554/files/employee_performance_review_template_word_document.pdf
    • https://cdn.shopify.com/s/files/1/0438/6524/3813/files/67969398509.pdf
    • https://cdn.shopify.com/s/files/1/0434/7982/6589/files/wejisefoxumopixajesewofem.pdf
    • https://cdn.shopify.com/s/files/1/0439/9579/1518/files/housine_al_jasmi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9573/5976/files/animation_techniques_book.pdf
    • https://cdn.shopify.com/s/files/1/0440/5172/6501/files/pisarovifowebaludujusu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/aptitude_and_mental_ability_questions_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90262961418.pdf
    • https://cdn.shopify.com/s/files/1/0437/5399/6442/files/15605303751.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wimuwukewamofese.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fd5.bin
86b124caeb09478eb6b2463a066c8cc0c4294c1352d4eaaeabd3ba6380890ec6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD5 5012 bytes
font_01_sfnt_off000080be.bin
eae4beb21831edb8c9a61610409d8a74ded21c79d1b68a173b76312a9d747148
pdf-font-stream PDF embedded font (sfnt) at offset 0x80BE 10736 bytes
font_02_sfnt_off0000a578.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA578 4324 bytes