Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c02f5e234780755…

MALICIOUS

PDF

45.8 KB Created: 2020-08-30 04:05:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44cd38602d5aae81597d0e0e7e750c84 SHA-1: bb22cb7387eadedfab0259a0168f8fa3483d46c3 SHA-256: 4c02f5e23478075522a46394f0240693af3ae36287843a2ee66ceb7f5576c4fc
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, masquerading as 'Ryobi doorman instructions', that point to a redirector URL. This suggests a phishing or scam attempt designed to lead the user to malicious content. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing confirms the malicious nature of the redirector.

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.com/wix?keyword=ryobi+doorman+instructions
    • https://static.usrfiles.com/ugd/b8c837_1e096bb579024598b39fa9e4beddb708.pdf
    • https://static.usrfiles.com/ugd/b8c837_94a74801f76b4755a92aa15516616763.pdf
    • https://static.usrfiles.com/ugd/2c608b_cc37d3e212b64bff8c1fe38464d44e4e.pdf
    • https://static.usrfiles.com/ugd/b8c837_09714c9640e64a18a20a9b21644430a9.pdf
    • https://static.usrfiles.com/ugd/7ff653_e4e086a04ef44cc29504a91f98027013.pdf
    • https://static.usrfiles.com/ugd/409ca8_6a92c96b550240f68e7900dae057060b.pdf
    • https://static.usrfiles.com/ugd/565485_f316e428fce14d568bad01845638c981.pdf
    • https://static.usrfiles.com/ugd/b8c837_a88509c058504f01b420aa9940b59a71.pdf
    • https://static.usrfiles.com/ugd/c1615c_f3bf1c3e781d4dd2933a46ebbee2d39b.pdf
    • https://static.usrfiles.com/ugd/d94ae5_021bb477cd7f40d2adbf7207afc3ff26.pdf
    • https://static.usrfiles.com/ugd/b8c837_3260366124be4704b453ddd5b010acfb.pdf
    • https://static.usrfiles.com/ugd/7dd30d_55d96c99407b4554954047db2731a3e4.pdf
    • https://static.usrfiles.com/ugd/54fa57_509328a1b8074c07a97b07d270ed2a5b.pdf
    • https://static.usrfiles.com/ugd/82e28d_3c20e15d750a44cd899eebb7137a6dc8.pdf
    • https://cdn.shopify.com/s/files/1/0434/3591/7464/files/35877487046.pdf
    • https://cdn.shopify.com/s/files/1/0428/0143/0695/files/74771418189.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rafudegilezenetizaxesuvos.pdf
    • https://cdn.shopify.com/s/files/1/0432/3033/1039/files/livro_epidemiologia_basica.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_off00006edc.bin
f8de32de1b88a8dec15b499e7b652ef10983165e39a96dacd0190737fc33cab8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDC 5304 bytes
font_01_sfnt_off000080c6.bin
202e530d610ca094c4e1a55c777261bfbdd05b5c2e96c8e477620069cf7f40fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x80C6 13456 bytes