Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7727d4b114a22f8…

MALICIOUS

PDF

36.8 KB Created: 2020-09-09 06:44:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7491eaeeb41c248247423b0e6bbb1fc3 SHA-1: 96bb7e58a8143472de2970efada46456188aaac4 SHA-256: f7727d4b114a22f845a476d04274c76334fa5c2769fc7e9dcade83269f81d401
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised with a game-related keyword. This redirector likely leads to further malicious content or phishing pages. The document also contains a large number of embedded links to various PDF files hosted on Shopify, suggesting a link farm or SEO poisoning attempt to improve search engine ranking for malicious content.

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.club/wix?keyword=last+day+battleground+survival+game
    • https://cdn.shopify.com/s/files/1/0431/4192/2977/files/dinutesaxeguduzoditisonu.pdf
    • https://cdn.shopify.com/s/files/1/0440/1646/8133/files/95344217639.pdf
    • https://cdn.shopify.com/s/files/1/0434/3726/0966/files/17851485742.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/64290639569.pdf
    • https://cdn.shopify.com/s/files/1/0432/0703/2990/files/dukubafonebu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2285/9944/files/best_application_for_reader_ipad.pdf
    • https://cdn.shopify.com/s/files/1/0430/5820/0729/files/vimewelezafuxodelad.pdf
    • https://static.usrfiles.com/ugd/0adedf_dd5ab0db349b4092bef63af91ae65016.pdf
    • https://static.usrfiles.com/ugd/538d67_a418acc9b69a436083f887ed0c6aed02.pdf
    • https://static.usrfiles.com/ugd/e42c35_c434f5799dba4e748117ce4f46965634.pdf
    • https://static.usrfiles.com/ugd/d4da64_cf45c24de3b04fd1a3a7a2b6d5b667f9.pdf
    • https://static.usrfiles.com/ugd/e73fea_cd282039da3e4854b4d286d72a8b051d.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/how_to_make_steam_download_faster.pdf
    • https://cdn.shopify.com/s/files/1/0434/6612/9574/files/vampire_the_masquerade_download_free.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_off0000516c.bin
d57ba4d6772a66120c2b45adf5f6b866b4b553bd7b1b9b2ca8336a3e788329f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x516C 5388 bytes
font_01_sfnt_off000063b7.bin
7dcbdc3aa5e6c5ab0975c71f14a61c1078acafc8bee2ed7760f969b8124941b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63B7 10280 bytes

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