Malicious PDF — malware analysis report

Static analysis result for SHA-256 f85c50469e36a314…

MALICIOUS

PDF

46.8 KB Created: 2020-08-30 20:07:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffb18de5186ea780ff683fc4f50d53af SHA-1: 443e1b9defe1b4c3ec3fde5d0ad6d60995f2f616 SHA-256: f85c50469e36a3140144ba07c6384f4b703fd7dc7edccdfa037414fb4acaea3f
120 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is ttraff.ru, which is likely used to redirect users to further malicious content. The document body contains garbled text but also includes the malicious URL and several benign-looking Shopify URLs, indicating a potential lure or distraction.

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.ru/wix?keyword=window+of+tolerance+emdr
    • https://cdn.shopify.com/s/files/1/0430/5187/6509/files/stoking_the_flames_grim_dawn.pdf
    • https://cdn.shopify.com/s/files/1/0435/4156/1503/files/77551817821.pdf
    • https://cdn.shopify.com/s/files/1/0437/0186/2554/files/billie_jean_fingerstyle_tab.pdf
    • https://cdn.shopify.com/s/files/1/0432/2459/6642/files/vadofipesanuzugiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/6187/0746/files/70067676685.pdf
    • https://cdn.shopify.com/s/files/1/0430/0580/4698/files/proof_of_mean_and_variance_of_negative_binomial_distribution.pdf
    • https://cdn.shopify.com/s/files/1/0433/4610/0377/files/39105668978.pdf
    • https://cdn.shopify.com/s/files/1/0431/1239/9010/files/30887544285.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32506959796.pdf
    • https://static.usrfiles.com/ugd/0adedf_6a801cda339d4635b619226c401b3725.pdf
    • https://static.usrfiles.com/ugd/c3f88d_d7bae65424dd4f0cbda99fd85afca0e3.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_c5eab11cc5384241a47c9462ac8224d7.pdf
    • https://static.usrfiles.com/ugd/760101_ddc61e83df894dcca2febfe7656aa8ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_28410656406e4946852adc44fe522506.pdf
    • https://static.usrfiles.com/ugd/b8c837_855f772ebb2943a78ef9bfa6a3b7f4fb.pdf
    • https://static.usrfiles.com/ugd/b8c837_697aaf178e0b4b4287b4993b826fa0c9.pdf
    • https://static.usrfiles.com/ugd/b5aed9_7db9fd4939934b59af8105c3e6264f3b.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_off00007a89.bin
1836687e83bf9f282c58e941a287323099006a91b71be2d16540164fb8329d79
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A89 5096 bytes
font_01_sfnt_off00008bd6.bin
bcdab81ab3aff77b53e2f8a51bd88b4cfa2a9c9629162585ef4499e025f531a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD6 10120 bytes