Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2a23daffb351249…

MALICIOUS

PDF

44.7 KB Created: 2020-08-30 09:54:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff218296683f7e591cf711f17bc7d5ac SHA-1: 1c605b5df9b2220165fb9613e37c8f25eda49f8a SHA-256: d2a23daffb3512493a61ae50c6eb643c728fe20e3ae69c37f1d7c74ab8004415
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with the primary link pointing to a known malicious redirector. The embedded URL in the document body also leads to this redirector. This indicates a phishing or scam attempt, likely to lead the user to a malicious site.

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=essentials+of+oceanography.pdf
    • https://static.usrfile
    • https://static.usrfiles.com/ugd/e3ed1f_a8574ef278c84aadae3e1be1164c0a38.pdf
    • https://static.usrfiles.com/ugd/b8c837_83b72741332b4774bce30abf6f9c790c.pdf
    • https://static.usrfiles.com/ugd/1a89c8_4216f62263604a918256b8efbe92082f.pdf
    • https://static.usrfiles.com/ugd/2b3f46_d7a8c93214404e6aa647607feb258a5d.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f4fad99df694fcabbcc53da8f491fd4.pdf
    • https://static.usrfiles.com/ugd/4c76bf_31be6dca181445e5bbfa98f0de654d48.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc382d467c754a869cd3d621bcb08ec2.pdf
    • https://static.usrfiles.com/ugd/cac9e4_13be0f5fdc034b8aa089f7c3d272a2b3.pdf
    • https://static.usrfiles.com/ugd/2f07a1_7d5bc796731147979a45e89bf92a5a7c.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/jcarousel_callback_function.pdf
    • https://cdn.shopify.com/s/files/1/0433/1775/6062/files/google_cardboard_vr_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/5508/6742/files/16875765089.pdf
    • https://cdn.shopify.com/s/files/1/0436/5461/1102/files/25193968716.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_off00007092.bin
1057f4b0c0b74d643c237a1bbccbf9a0073500de2ecae5c6b81f465ce64a1e7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7092 5508 bytes
font_01_sfnt_off0000834f.bin
a420047b725bcaf69f80a1336d1aacb01e63080225f870eac22dc896d2f456ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x834F 10104 bytes

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