Malicious PDF — malware analysis report

Static analysis result for SHA-256 adbb07435de97035…

MALICIOUS

PDF

33.8 KB Created: 2020-08-26 15:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 745db263bba6c8ae0a06b03e8361f5f7 SHA-1: f5ca86a044f814db88897e206dee5c6856db9778 SHA-256: adbb07435de97035f11967f079d4d3df87f72699cbdf02164fac8648b02059f3
120 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 'https://ttraff.link/pify?keyword=industrial+ventilation+acgih+free+download'. This URL is presented within the document body, suggesting a social engineering lure to trick users into downloading content. The presence of a PDF link farm further supports the malicious intent, aiming to distribute links to various PDF files, some of which are hosted on potentially untrusted domains.

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.link/pify?keyword=industrial+ventilation+acgih+free+download
    • http://files.sianyeshe.com/uploads/1/3/0/7/130738848/4086950.pdf
    • http://sanafan.nakedfranktheatre.com/uploads/1/3/2/6/132682697/2489989.pdf
    • http://files.yourownpathyoga.com/uploads/1/3/1/8/131871786/butidoveb.pdf
    • http://potugoga.heat-shield.info/uploads/1/3/1/6/131607239/46f06fdb28a35.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7800/files/48340519461.pdf
    • https://cdn.shopify.com/s/files/1/0431/8278/4676/files/64800558336.pdf
    • https://cdn.shopify.com/s/files/1/0440/7004/3813/files/diwokidaru.pdf
    • https://cdn.shopify.com/s/files/1/0432/0496/8603/files/23897235180.pdf
    • https://cdn.shopify.com/s/files/1/0431/3484/5079/files/xejebapu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/human_anatomy_and_physiology_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0258/4480/files/76592186686.pdf
    • https://cdn.shopify.com/s/files/1/0434/4207/7852/files/87694100777.pdf
    • https://cdn.shopify.com/s/files/1/0430/5856/1175/files/the_fall_of_lucifer_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/4444/6118/files/vetapazeduwadukikugitiv.pdf
    • https://cdn.shopify.com/s/files/1/0438/2287/4781/files/ravenous_2017_movie_free.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_off0000447e.bin
a8862f51db883f859be9b3782102b63f23c3575ce9059d40b0d2ea2215161714		 pdf-font-stream PDF embedded font (sfnt) at offset 0x447E 5372 bytes
font_01_sfnt_off000056ca.bin
39e619fc8b01da4e706fba4b848453f9be64664f0a73880545e4e40894eef94d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56CA 9984 bytes

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