Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3bfad5c77c33218…

MALICIOUS

PDF

50.7 KB Created: 2020-09-08 04:39:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 582e1a03b61f1bcce8f18be74189704d SHA-1: d35c63c23cba30cd4d15bdff6c4bb8ca9247677f SHA-256: e3bfad5c77c3321852137ca848fbc05783dd5bfa58ca8aeb86511218b4c0602d
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.me/wix?keyword=cisco+packet+tracer++for+windows+8', which is likely intended to deliver malware. Additionally, a PDF SEO link farm heuristic indicates the document is part of a larger infrastructure designed to distribute malicious files. The document body also contains the same lure text and URLs, reinforcing the phishing attempt.

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.me/wix?keyword=cisco+packet+tracer++for+windows+8
    • https://static.usrfiles.com/ugd/dfb5f8_01670ac500bb4bb3a1d13777c5d9ff1e.pdf
    • https://static.usrfiles.com/ugd/12f4eb_0c54f11801df4d37b7cea99f609dbf5d.pdf
    • https://static.usrfiles.com/ugd/0d9a50_39e3d8daaa1d4a07b5cc9972cb22de22.pdf
    • https://static.usrfiles.com/ugd/f63f29_737b1a12d15a45a7b7250b1bdb37ab14.pdf
    • https://static.usrfiles.com/ugd/b8c837_0dfc3785306543a388e23d8a6da47aa9.pdf
    • https://cdn.shopify.com/s/files/1/0431/8927/2737/files/pytest_coverage_xml_report.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/c_random_number_between_0_and_1.pdf
    • https://cdn.shopify.com/s/files/1/0434/5099/0753/files/guwadunajefepoz.pdf
    • https://cdn.shopify.com/s/files/1/0463/3038/0450/files/kilukef.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/giterenodaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/1049/0519/files/a_w_pink_attributes_of_god.pdf
    • https://cdn.shopify.com/s/files/1/0439/7203/4718/files/6744899516.pdf
    • https://cdn.shopify.com/s/files/1/0433/0107/7142/files/xaluriv.pdf
    • https://cdn.shopify.com/s/files/1/0463/2851/2672/files/89838490122.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_off000062c6.bin
80c63eb0a868ce81f906c7241d02a03ef0d59e8ce6290505656ab85636e380bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x62C6 8364 bytes
font_01_sfnt_off00007eb3.bin
d089222507da9093def70c154f816702ecd09623898742f78f5657799b9d482a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB3 5372 bytes
font_02_sfnt_off0000911e.bin
ef43b836237d19463728fa89267e7d43fc5c23042096670f30525de976dea9ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x911E 14424 bytes