Malicious PDF — malware analysis report

Static analysis result for SHA-256 2035b907f6143863…

MALICIOUS

PDF

41.0 KB Created: 2020-08-18 20:37:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 670e9e84da3b3cbc9fa6778a81ed9adb SHA-1: 7c5499307f053dc606f8ce68182c67e2603d23aa SHA-256: 2035b907f6143863c9dbfd48beb7a86b26c4969300f75a70253d4a95ba92d9ad
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=my+talking+tom++for+pc'. This URL is presented within the document body, likely as a lure to trick users into clicking it. The file also exhibits characteristics of a link farm, with numerous embedded links, many pointing to benign Shopify URLs, but one also pointing to 'http://femetaju.jgwebdesigns.net/uploads/1/3/1/6/131606289/6036312.pdf'. The primary malicious intent appears to be directing users to the ttraff.ru redirector.

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.ru/pify?keyword=my+talking+tom++for+pc
    • http://femetaju.jgwebdesigns.net/uploads/1/3/1/6/131606289/6036312.pdf
    • https://cdn.shopify.com/s/files/1/0433/8624/1189/files/latest_badminton_rules.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/11838969773.pdf
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/33396670459.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6010/files/51546541038.pdf
    • https://cdn.shopify.com/s/files/1/0428/6860/5095/files/fundamentals_of_vibrations_meirovitch_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0429/1539/7788/files/kenmore_dishwasher_model_665_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/7532/9441/files/budget_2020_highlights_gradeup.pdf
    • https://cdn.shopify.com/s/files/1/0432/6768/6558/files/zinoxajazeliko.pdf
    • https://cdn.shopify.com/s/files/1/0432/5900/3038/files/22386049950.pdf
    • https://cdn.shopify.com/s/files/1/0432/9429/4171/files/fikovutinisigoduja.pdf
    • https://cdn.shopify.com/s/files/1/0438/3775/1453/files/21734771844.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_off00005cf3.bin
6c451ba4674ce18d5925dd17d5c7ba013da14cb5123c39bacecf176f6c8a1d09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF3 5328 bytes
font_01_sfnt_off00006f0f.bin
8b12dd5c75c079171545c5786c31b2876313eb7bc1d22afbd7471d702014a4a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0F 12772 bytes

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