Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1ab04635d8c5936…

MALICIOUS

PDF

36.5 KB Created: 2020-08-12 12:02:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56b48cf04b4d718a6863d10fa078271c SHA-1: 4dd3d2c100094aee63ac2ef2c48d89e3cede790c SHA-256: a1ab04635d8c593675c66be01a1f5669c6cf32c100f94555a311043d964053db
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a link farm designed to manipulate search engine results or distribute malicious content. The primary malicious URL identified is https://ttraff.com/pify?keyword=owners+corporation+model+rules+pdf, which is likely used to redirect users 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/pify?keyword=owners+corporation+model+rules+pdf
    • http://files.emmetcd.org/uploads/1/3/1/4/131437633/tiwoxepu-disefagenatagil-dosopi.pdf
    • http://files.fcadefuniak.com/uploads/1/3/1/4/131409264/2089233.pdf
    • http://files.stowemusic.com/uploads/1/3/0/8/130874524/7595388.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejumaxerufu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9504/files/42121695639.pdf
    • https://cdn.shopify.com/s/files/1/0439/4228/1371/files/91545277040.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/felavilubeze.pdf
    • https://cdn.shopify.com/s/files/1/0437/4088/9242/files/download_adobe_after_effects_tutorials.pdf
    • https://cdn.shopify.com/s/files/1/0430/7304/4634/files/bojokusufojigesuge.pdf
    • https://cdn.shopify.com/s/files/1/0428/8305/5782/files/gazadig.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/angina_estable_y_angina_inestable.pdf
    • https://cdn.shopify.com/s/files/1/0440/6794/6648/files/24488492915.pdf
    • https://cdn.shopify.com/s/files/1/0430/5833/1799/files/lixobudipejafafamepunovod.pdf
    • https://cdn.shopify.com/s/files/1/0439/6105/7438/files/lala_ramswaroop_calendar_march_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/8724/0095/files/26491549951.pdf
    • https://cdn.shopify.com/s/files/1/0437/0225/5770/files/93849530631.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_off00005003.bin
56d60f5d8866fac346fda0a0ad3c3e4e312cc0d5facdbfe81175351769c43fff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5003 5420 bytes
font_01_sfnt_off00006263.bin
7b20f83edc1f6f7f7918a00b9e1576382729c103ce090a60db1697b3e70dda0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6263 10188 bytes

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