Malicious PDF — malware analysis report

Static analysis result for SHA-256 224453ba27693b51…

MALICIOUS

PDF

41.4 KB Created: 2020-08-17 18:15:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 591bb112d55b1e98fb418fa19894096a SHA-1: 0a4dfa8bfda9ac691fab5e1e5dbb47ec280396c2 SHA-256: 224453ba27693b5117e4a6fe2192f4efeacebde59228e8bac7e687d39de1750d
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=startup+company+save+game'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though heavily corrupted, contains fragments of the redirector URL and the title 'Startup company save game', suggesting a lure related to business or finance. The primary attack pattern involves tricking the user into clicking the malicious link.

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=startup+company+save+game
    • http://files.agavemag.com/uploads/1/3/1/0/131071164/tolurukajin.pdf
    • http://suzej.cisdbooksandbytes.org/uploads/1/3/1/3/131383613/8289789.pdf
    • https://cdn.shopify.com/s/files/1/0437/9531/6893/files/website_layout_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7962/files/rumejafodamug.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1799/files/48646068002.pdf
    • https://cdn.shopify.com/s/files/1/0433/7513/2821/files/25709130562.pdf
    • https://cdn.shopify.com/s/files/1/0429/1959/2099/files/49869762693.pdf
    • https://cdn.shopify.com/s/files/1/0433/2745/5387/files/charles_bukowski_post_office.pdf
    • https://cdn.shopify.com/s/files/1/0438/5406/9910/files/19656804314.pdf
    • https://cdn.shopify.com/s/files/1/0428/9721/1558/files/sofuneliredivexolonupenun.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/jaguxe.pdf
    • https://cdn.shopify.com/s/files/1/0440/8963/9077/files/87208794323.pdf
    • https://cdn.shopify.com/s/files/1/0433/0081/4998/files/coleman_generator_5000.pdf
    • https://cdn.shopify.com/s/files/1/0433/8126/0438/files/bowasebomufabem.pdf
    • https://cdn.shopify.com/s/files/1/0434/1304/5398/files/ecco_sand_filter.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_off00006196.bin
f7dfbf9e9c5d050f199ea69f09ef504b8bb278ef90e3203a9f6316e3db6fc677		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6196 5484 bytes
font_01_sfnt_off0000742c.bin
fa07816f0c16f9a5c34acce3690dd1cd3c436ced8dbcf643ee13197ac1e9b975		 pdf-font-stream PDF embedded font (sfnt) at offset 0x742C 10792 bytes

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