Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b17cb18c4a5bdf6…

MALICIOUS

PDF

57.6 KB Created: 2020-08-31 14:38:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9876c0fe1c2f3548be6ae404eac25048 SHA-1: 30bc0e4d2d994e814957368421f31eebffa3ea52 SHA-256: 8b17cb18c4a5bdf6a8f3a06d6c592353658b2f454f535ef3821610d18b86c588
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a lure related to an Australian visa form, directing users to a URL that is part of a known malicious redirector infrastructure. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic. The presence of a callback phishing lure further supports the malicious intent.

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.com/wix?keyword=australian+visa+form+1419+fillable
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0437/0857/9993/files/duxegukaborepikato.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rafudegilezenetizaxesuvos.pdf
    • https://cdn.shopify.com/s/files/1/0448/8128/1191/files/difference_between_investment_speculation_and_gambling.pdf
    • https://cdn.shopify.com/s/files/1/0435/1354/4863/files/16187924765.pdf
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/40901989337.pdf
    • https://cdn.shopify.com/s/files/1/0435/5109/6993/files/case_files_family_medicine_google_drive.pdf
    • https://cdn.shopify.com/s/files/1/0439/2307/9323/files/atropina_prospecto.pdf
    • https://cdn.shopify.com/s/files/1/0435/1849/2824/files/6319458998.pdf
    • https://static.usrfiles.com/ugd/a2c2bc_69aacd5e090344cea44a1da44fe7cacb.pdf
    • https://static.usrfiles.com/ugd/49be48_26e5de99645e47bbae87c2615345e1d3.pdf
    • https://static.usrfiles.com/ugd/0049ca_9c2dab0fd0a947a3bf70bb0a987ebb6c.pdf
    • https://static.usrfiles.com/ugd/b8c837_449531be947f4abbbab4ac6ba5463b66.pdf
    • https://static.usrfiles.com/ugd/b8c837_758a16ec0518498996994908b41602d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_2575ec882dff48b9964eae78e446db25.pdf
    • https://static.usrfiles.com/ugd/a107db_5d8b7e097b6e4563b756abfc38ec0349.pdf
    • https://static.usrfiles.com/ugd/b8c837_5a132efa975a4f72b20008bd854b21ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_1af16ffb28e6454c916cbb9a6fc20157.pdf
    • https://static.usrfiles.com/ugd/b88e3d_228ee44cb5fe4ec6b8694c7b5fcde198.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_off000093a4.bin
c3a9eb1bdf488c42daaafa4e7bc8b3d0b29f10d0364f730e9051e78a9334b1e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93A4 5280 bytes
font_01_sfnt_off0000a588.bin
9b22c8e1651ef787b599c80b61c4897aede8d444319b9ac7a55f1c062bc7b8f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA588 11044 bytes
font_02_sfnt_off0000cb01.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB01 4324 bytes

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