Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffdcb07985f18f6a…

MALICIOUS

PDF

44.5 KB Created: 2020-08-29 03:31:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3f9bf758ffae40e6a24ef19431de0ba SHA-1: c4b5bb92404615e85e64c97188dba5a14de546e7 SHA-256: ffdcb07985f18f6a41ed437f988a88e74758147d10a47e974043fe70f4a1c191
128 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, ttraff.ru, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the same URL and a reference to a 'registration code download', suggesting a social engineering lure. The presence of a large number of embedded links to static.usrfiles.com, while individually benign, contributes to a link farm tactic, potentially for SEO manipulation or to obscure the primary malicious destination.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=bleach+soul+resurreccion+pc+registration+code+download
    • https://static.usrfiles.com/ugd/b8c837_9a20c289d67942c2ac52d7b4af04f017.pdf
    • https://static.usrfiles.com/ugd/b8c837_5b0552f6909d4ddd9549ca0bf470489b.pdf
    • https://static.usrfiles.com/ugd/b8c837_ecde8617b58f4ec8acc2359192e4fa6e.pdf
    • https://static.usrfiles.com/ugd/b8c837_ae2353dbd8ff440390744f326616ca06.pdf
    • https://static.usrfiles.com/ugd/b8c837_51daf907da9847f090bb1f03e0535f51.pdf
    • https://static.usrfiles.com/ugd/b8c837_934e2118687c44ffa2d7841d581f7731.pdf
    • https://static.usrfiles.com/ugd/b8c837_d5604d5f2d7741efba6f247756932ddc.pdf
    • https://static.usrfiles.com/ugd/b8c837_a2eb49c687ef45a28f29cbe42912ab83.pdf
    • https://cdn.shopify.com/s/files/1/0438/1242/1789/files/afc_asian_cup_uae_2020_match_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0431/0604/2013/files/jesasadezonakawowuguzerib.pdf
    • https://static.usrfiles.com/ugd/b8c837_eb86dd28dddd431db3c7d90919001e36.pdf
    • https://static.usrfiles.com/ugd/b8c837_58411345d1bd491490161519b197cc46.pdf
    • https://static.usrfiles.com/ugd/b8c837_f37581e6b5b8477bbcd8c677da0a617f.pdf
    • https://static.usrfiles.com/ugd/b8c837_7dc467f608c34b488a6b554f8e911f8d.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d15.bin
f7e56db5eacba7c58f208469d299e804c798ebcd4b6b2defe4a15aef3fb5b7d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D15 4080 bytes
font_01_sfnt_off00006b81.bin
85d9084df5a0e11297e18546f28bee231ba45c8e18798040d1e3f21ef5930516
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B81 5476 bytes
font_02_sfnt_off00007e29.bin
3cac2af5ef81c2181d1af0eaa92ce9bc23542c413647445827896165cda70df6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E29 11972 bytes