Malicious PDF — malware analysis report

Static analysis result for SHA-256 51a15b86fd5fe6f9…

MALICIOUS

PDF

43.7 KB Created: 2020-08-28 14:42:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ff466103e92bc75943c3211f152aeca SHA-1: 3a9060bfbcd608f33b6191d454c1fb13b57feda9 SHA-256: 51a15b86fd5fe6f9e2498efaa01885c47c0735d0426a8621c0cad7f5c72965ea
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, a common tactic for SEO poisoning and redirecting users to malicious sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to 'ttraff.com', indicating a known redirector. The PDF_SEO_LINK_FARM heuristic further supports this by identifying a mass external PDF link farm. The primary malicious IOC is the redirector URL, which likely leads to a phishing or malware distribution 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=filmyzilla+hollywood+movie+hindi+dub
    • http://rovekebod.ruthbeckett.com/uploads/1/3/0/7/130739163/jokapadix-kuvekagafufido-robexeje.pdf
    • https://cdn.shopify.com/s/files/1/0433/7827/8563/files/7194778318.pdf
    • https://cdn.shopify.com/s/files/1/0434/2389/1618/files/29788108106.pdf
    • https://cdn.shopify.com/s/files/1/0436/3878/4158/files/raxaxeb.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/xadarozapupam.pdf
    • https://cdn.shopify.com/s/files/1/0432/9832/4638/files/marukum.pdf
    • https://cdn.shopify.com/s/files/1/0439/3297/5272/files/linevulit.pdf
    • https://cdn.shopify.com/s/files/1/0439/2298/1032/files/medicinal_chemistry_books_yogeshwari_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/3188/5986/files/bongo_flava_music_sites.pdf
    • https://cdn.shopify.com/s/files/1/0437/8496/2199/files/how_to_convert_azw3_to.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_off00006d08.bin
fc997c0a105376cc91fb00b2c3bd74b25dc6a8c47d754aca0a8636e125dbd4a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D08 5192 bytes
font_01_sfnt_off00007eaf.bin
2af5ccad6f0b0468ca4b69753070b2e14df685767948da1628b57bfd4e58a599		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EAF 10392 bytes

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