Malicious PDF — malware analysis report

Static analysis result for SHA-256 de574aee56277e43…

MALICIOUS

PDF

43.7 KB Created: 2020-08-15 05:16:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9feb361949cecb128c5693e7e855ce4d SHA-1: bec6427306af9e47ac7e5fe9cf18ba8bdda69dff SHA-256: de574aee56277e43a1ba3d39ca1fc86a99676d5d63f0b7cdeb71da6a565d99e5
128 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.cc/pify?keyword=video+audio+trimmer+free'. Additionally, it exhibits a PDF link farm heuristic, with numerous links pointing to Shopify domains, one of which is 'https://cdn.shopify.com/s/files/1/0448/5883/5105/files/activesheet_pastespecial_paste_xlpastevalues.pdf'. The presence of a 'download button' lure further supports the malicious intent of redirecting users to potentially harmful content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=video+audio+trimmer+free
    • http://files.busybaskets208.com/uploads/1/3/1/6/131636654/konaka_zisaboku_zolusinofawif.pdf
    • http://bupobiw.summoningstone.janaoliver.com/uploads/1/3/0/7/130739664/wegake_basubanebowije.pdf
    • https://cdn.shopify.com/s/files/1/0448/5883/5105/files/activesheet_pastespecial_paste_xlpastevalues.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/38868356937.pdf
    • https://cdn.shopify.com/s/files/1/0430/0180/7007/files/97746362831.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7396/files/wemurofutefubekamaxipa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3966/1981/files/botosopebikozari.pdf
    • https://cdn.shopify.com/s/files/1/0430/4506/0762/files/matt_leinart_net_worth.pdf
    • https://cdn.shopify.com/s/files/1/0429/4351/2732/files/all_country_visa_passport_photo_size.pdf
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/baxokiwusovofujopuxaz.pdf
    • https://cdn.shopify.com/s/files/1/0435/7960/5147/files/hepatitis_c_testing_guidelines_canada.pdf
    • https://cdn.shopify.com/s/files/1/0428/8305/5782/files/besaranu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3541/0077/files/nidezoros.pdf
    • https://cdn.shopify.com/s/files/1/0434/0121/6163/files/skf_journal_bearing.pdf
    • https://cdn.shopify.com/s/files/1/0437/4023/3880/files/joxawisepukafital.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_off00006e20.bin
12d0ad749b08428bef4b9c43919eb6b20ea4eaa6a593041ab21e04998c94c918
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E20 4808 bytes
font_01_sfnt_off00007e68.bin
9a2d49c113e84a73fc09094cf39f98623c79ea19b8ddabc175be7272155d0065
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E68 10420 bytes