Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e567c45811d8e61…

MALICIOUS

PDF

39.9 KB Created: 2020-08-29 20:45:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4845503bcd3f56da9daac9d3cad9cd07 SHA-1: 4ddcd42cd935a36b9f31522e76258c7e0270733f SHA-256: 3e567c45811d8e6128db20041dfaf9bb8710e48a28a03fa1d03fe900de7e8fc9
148 Risk Score

Malware Insights

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

The PDF file contains embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, contains text suggesting a payment lure ('Dish latino pagar mi cuenta') and references to invoice or payment contexts. The presence of numerous external PDF links, including one to a known malicious redirector, indicates a phishing or scam attempt to direct users to malicious infrastructure.

Heuristics 5

  • 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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.ru/wix?keyword=dish+latino+pagar+mi+cuenta
    • https://static.usrfiles.com/ugd/b8c837_165395e032fc4224bbf43cdaffa0df0d.pdf
    • https://static.usrfiles.com/ugd/d1d005_b1ddff4acf0c4ed9845810b5400d7890.pdf
    • https://static.usrfiles.com/ugd/b8c837_41401a2f0eea43b1b83d15ee84866c36.pdf
    • https://static.usrfiles.com/ugd/b8c837_6af028dd38a34b048515a74489ae655a.pdf
    • https://static.usrfiles.com/ugd/b8c837_16ebe99b704746ec9d98455de98a22e5.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/zobigoz.pdf
    • https://cdn.shopify.com/s/files/1/0437/8329/1029/files/zalezilasutaramoboba.pdf
    • https://static.usrfiles.com/ugd/b8c837_f52deb9be8244e29984e75f8eda850cf.pdf
    • https://static.usrfiles.com/ugd/b8c837_f1a4742eb5d045ea850a6c93b6a45d7b.pdf
    • https://cdn.shopify.com/s/files/1/0434/8536/4390/files/gta_san_andreas_cheats_pc_full_list_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0605/files/nesadakebip.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_off00005d43.bin
dc304bbce8b20943a896f54694ec8dc9c48b68654cc3485f27e8095ae6f7f31c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D43 5344 bytes
font_01_sfnt_off00006f41.bin
7c48c3354496361b667c95922522da7add2ea567bed57e4a99537d19fb5f23a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F41 10564 bytes

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