Malicious PDF — malware analysis report

Static analysis result for SHA-256 307e639065be72eb…

MALICIOUS

PDF

37.1 KB Created: 2020-08-08 02:47:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 455276340a52dff60e68d1532a6c7573 SHA-1: ad45286dc8b10deba991aae102c002d79a222a86 SHA-256: 307e639065be72eb6cd2b401413c92566f56d767b21c5ad1b4a083f890a53a8e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used in SEO spam or link farms. One of these links, 'https://ttraff.ru/pify?keyword=avid+one+pager+rubric+pdf', is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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=avid+one+pager+rubric+pdf
    • http://radazuli.photographybyroque.com/uploads/1/3/1/4/131437736/774965044fe14.pdf
    • http://files.constructivistpsych.org/uploads/1/3/1/3/131380146/4365395.pdf
    • http://jikunup.gratzkennels.net/uploads/1/3/2/7/132740405/1784140.pdf
    • https://cdn.shopify.com/s/files/1/0430/8847/8365/files/jebipaxakuwokarogaze.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9467339244.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5060/files/aneurisma_aorto_abdominal.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4503/files/chaganti_pravachanam.pdf
    • https://cdn.shopify.com/s/files/1/0431/4116/9309/files/lateral_epicondylitis_home_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0435/5732/2903/files/zasejusifixowod.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/50630287240.pdf
    • https://cdn.shopify.com/s/files/1/0434/9476/8792/files/jotevopovog.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/intel_business_strategy_case_study.pdf
    • https://cdn.shopify.com/s/files/1/0428/7909/0854/files/geometric_distribution_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/8375/0814/files/somaluwasokasixamezez.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_off00005416.bin
e7725227d1302f99de2012f58b1b113d01133d9940d0a08eeaab4ab955f88c93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5416 5300 bytes
font_01_sfnt_off00006638.bin
6a07659a52b6f9fd23dfaf09c0b983bb7c0661a419026d0bfe7230053b55d272		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6638 9864 bytes

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