Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ef91766c135208d…

MALICIOUS

PDF

34.7 KB Created: 2020-08-18 23:18:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a16fe8f3d4b2f7bec7f6e42cd809be6 SHA-1: 65d10907ba8855b8cbb707a61ae7d866de08d71f SHA-256: 8ef91766c135208d836edf6e355e0b2ae87e0f931861f49dd64888ae7f2e8035
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious link, 'https://ttraff.cc/pify?keyword=cheppave+chirugali+movie+bgms', is flagged as a known malicious redirector. This suggests the document's purpose is to lure users into clicking these links, likely leading to phishing pages or malware downloads.

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.cc/pify?keyword=cheppave+chirugali+movie+bgms
    • http://files.robotitechnologies.com/uploads/1/3/0/7/130775493/rilirukot-kasokoke-ridavusulizufu.pdf
    • http://files.friendsofmiddleboroughcemeteries.org/uploads/1/3/1/4/131437919/dawopiw-luvobupu.pdf
    • http://files.thebrooklynbarberacademy.com/uploads/1/3/1/3/131398362/4a55f85be9edc.pdf
    • https://cdn.shopify.com/s/files/1/0430/2811/9706/files/legudiwijipelisuwapo.pdf
    • https://cdn.shopify.com/s/files/1/0437/6539/9713/files/contoh_report_text_tentang_global_warming.pdf
    • https://cdn.shopify.com/s/files/1/0434/9827/4978/files/fundamentals_of_computer_networking_and_internetworking.pdf
    • https://cdn.shopify.com/s/files/1/0443/8127/4278/files/506_assignment_answer_in_english_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/5710/0453/files/convert_to_word_docx.pdf
    • https://cdn.shopify.com/s/files/1/0428/5153/2963/files/xemiduvotowazikok.pdf
    • https://cdn.shopify.com/s/files/1/0432/2010/7428/files/joxotinisideto.pdf
    • https://cdn.shopify.com/s/files/1/0434/0957/1989/files/pathologie_de_l_appareil_urinaire.pdf
    • https://cdn.shopify.com/s/files/1/0434/8634/7414/files/48704753316.pdf
    • https://cdn.shopify.com/s/files/1/0431/7790/2241/files/24321635199.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0850/files/el_cambio_climatico_en_argentina.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_off00004a32.bin
ae04da0d32c2eeb815002f418604f28c66bcb099adbdc67fb567f4c65b7cd347		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A32 5452 bytes
font_01_sfnt_off00005c9c.bin
51fd5992b52b8a219f549a656e4044f8aed81d2999f263e091e410d3588213e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9C 9848 bytes

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