Malicious PDF — malware analysis report

Static analysis result for SHA-256 98c2e77dec609236…

MALICIOUS

PDF

38.0 KB Created: 2020-08-31 03:01:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4be11a1ebef5b9f7d925ee2c828a8172 SHA-1: 776adc6d5287ebda4a4d055acea9017c4f323e44 SHA-256: 98c2e77dec6092365d6b3499f11024b2c200f337df51922a7a6ab262b46b7ef4
128 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.ru/wix?keyword=sunbeam+food+dehydrator+model+kn128e+manual'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, including 'https://cdn.shopify.com/s/files/1/0431/0378/1015/files/great_smoky_mountains_trail_map.pdf'. The presence of a 'download button' lure further supports a malicious intent to redirect users. No scripts were extracted from this sample.

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=sunbeam+food+dehydrator+model+kn128e+manual
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/great_smoky_mountains_trail_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/9831/6707/files/barashada_computerka.pdf
    • https://cdn.shopify.com/s/files/1/0439/2399/6840/files/72073296385.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5013/files/tesla_model_3_performance_lease.pdf
    • https://cdn.shopify.com/s/files/1/0439/2199/7979/files/bloody_stream_full.pdf
    • https://static.usrfiles.com/ugd/0d2908_658512e59d3e485b8c8154588a2c553a.pdf
    • https://static.usrfiles.com/ugd/b8c837_0b76a687defe4b8bb8b14de33fecf263.pdf
    • https://static.usrfiles.com/ugd/b8c837_eeb644a8260646139682e89063430a1d.pdf
    • https://cdn.shopify.com/s/files/1/0430/7533/8389/files/49817839063.pdf
    • https://cdn.shopify.com/s/files/1/0427/6974/4028/files/20015184946.pdf
    • https://cdn.shopify.com/s/files/1/0431/5421/0980/files/rofanedanu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/carboxylic_acid_group_chemguide.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9560/files/38944894292.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f776df66d0d40f7ade6c47fe730638f.pdf
    • https://static.usrfiles.com/ugd/b8c837_64d4c30f99834af4941a77d1891491d8.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_off00004783.bin
64425e3a17b0af7f2f77028452bea6711d22273cef5ae392667005d496014a9b
pdf-font-stream PDF embedded font (sfnt) at offset 0x4783 5588 bytes
font_01_sfnt_off00005a58.bin
194e60e915c353272b7e164535ebe92da2ef98e0d8dbdc5964661cd654667c36
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A58 10032 bytes
font_02_sfnt_off00007cb4.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB4 4324 bytes