PDF malware analysis — malicious · b92511484295e4da

MALICIOUS

PDF

57.8 KB Created: 2020-08-22 20:05:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 84b11108a2b48d3682cededceb01c1fc SHA-1: 8296e9b371ac83e53b774a6c42f3268cbdaaaf06 SHA-256: b92511484295e4dae333571d7332c1a8741ba49860c631a65675cecd09d6805b

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link and a link farm, indicating a social engineering attempt. The document body, though heavily obfuscated, contains text suggesting it is an 'Api documentation sample template' and includes the malicious URL. The presence of multiple Shopify links, while some are benign, suggests an attempt to blend in with legitimate content while hosting the malicious redirector. The primary malicious URL is https://ttraff.ru/pify?keyword=api+documentation+sample+template.

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.
Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE

Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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/pify?keyword=api+documentation+sample+template
- http://files.yourlushgarden.com/uploads/1/3/0/7/130740068/03036.pdf
- https://cdn.shopify.com/s/files/1/0438/3562/1526/files/87751105685.pdf
- https://cdn.shopify.com/s/files/1/0430/5921/6537/files/30496578071.pdf
- https://cdn.shopify.com/s/files/1/0432/7368/3100/files/11347146280.pdf
- https://cdn.shopify.com/s/files/1/0433/5458/7288/files/nizugivuzijekuji.pdf
- https://cdn.shopify.com/s/files/1/0432/2036/9567/files/geological_map_reading_and_interpretation.pdf
- https://cdn.shopify.com/s/files/1/0427/4677/3660/files/taste_of_ink_lyrics.pdf
- https://cdn.shopify.com/s/files/1/0429/8535/7463/files/15372690928.pdf
- https://cdn.shopify.com/s/files/1/0430/0174/1463/files/smoke_on_the_water_guitar_tab.pdf
- https://cdn.shopify.com/s/files/1/0432/7692/7141/files/titewilegonegedupegilu.pdf
- https://cdn.shopify.com/s/files/1/0433/9158/2357/files/java_program_to_implement_simple_calculator.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000095c8.bin` `1008b27949831d91b3754a6817b49b66a50e2b48f349d2384a908f22f1533c07`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x95C8	4996 bytes
`font_01_sfnt_off0000a6a4.bin` `3c71b504bf766a799fe6b93fb618813b0d5ddf8457b8ec68f706aa74acfd18c6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA6A4	10452 bytes
`font_02_sfnt_off0000ca65.bin` `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCA65	4324 bytes

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