Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c6c37fc18750508…

MALICIOUS

PDF

50.0 KB Created: 2020-09-01 01:09:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 319c2ed44d8e010dca0ae62cb80c77ba SHA-1: 5316586811e06820606f917cd750443075349108 SHA-256: 8c6c37fc1875050882a74e54ad42ab61e86b834940425953c1ad4e5e5b737b85
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to download a malicious file. The document body also contains text related to downloading 'tiny archer mod apk rexdl', further supporting the lure. The presence of a mass external PDF link farm suggests an attempt to manipulate search engine results or distribute content widely.

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.com/wix?keyword=tiny+archer+mod+apk+rexdl
    • https://static.usrfiles.com/ugd/5ad03d_582bfd4582cf47a9988bb8dbc7f6ed7c.pdf
    • https://static.usrfiles.com/ugd/72216b_469f14e3fe9046609aa447041174e084.pdf
    • https://static.usrfiles.com/ugd/1a89c8_215e2e7f0c0341c3acd3c4340ffd772f.pdf
    • https://static.usrfiles.com/ugd/40b9e6_d7e69ef150d040819d6f4433402330ce.pdf
    • https://static.usrfiles.com/ugd/4bdc6d_cbd2bd15407043cbabd9d965e8dd4373.pdf
    • https://static.usrfiles.com/ugd/b8c837_9a1b85329e56487085f77b286c4c3d0d.pdf
    • https://static.usrfiles.com/ugd/3b0c81_4385eb0fa14f4bab8ea2dbc702d65936.pdf
    • https://static.usrfiles.com/ugd/6f58fb_23b0643e512f4b3aa39cbb1e657b8cc7.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f9a4365e1224fc896f2ac8074c61f03.pdf
    • https://static.usrfiles.com/ugd/b8c837_1bb2aa7339834f3a8358bd9568f5b3e9.pdf
    • https://static.usrfiles.com/ugd/111c46_c81a16850cd7473ba2c33be117a4b088.pdf
    • https://static.usrfiles.com/ugd/ea2f88_7f283a425e874166b6f0123555f33458.pdf
    • https://static.usrfiles.com/ugd/0d002d_51029843e7904159bb5db26fb2745827.pdf
    • https://static.usrfiles.com/ugd/73cb9e_0575f4e1f52a4d0183997f2836681c3d.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061cc.bin
1d6e03742a28dfa0242a4e6e400233ac5b7e200374ec95738ca1580bd215a063
pdf-font-stream PDF embedded font (sfnt) at offset 0x61CC 5028 bytes
font_01_sfnt_off000072a3.bin
12b4963452212245da57c2941623b0793dee2b1d4e71525f10fe40672514d226
pdf-font-stream PDF embedded font (sfnt) at offset 0x72A3 10916 bytes
font_02_sfnt_off0000982c.bin
d8a1a34de14a7b8fce5e51635835121d353d188f9ac9ce1e11538509fd4c5cdc
pdf-font-stream PDF embedded font (sfnt) at offset 0x982C 16060 bytes
font_03_sfnt_off0000acc4.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xACC4 4324 bytes