Malicious PDF — malware analysis report

Static analysis result for SHA-256 3208a51eb87dce0c…

MALICIOUS

PDF

40.9 KB Created: 2020-08-02 21:32:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41e71ff42ffd895cdf95c0199e5da093 SHA-1: 824c0e22fc28fb2a0a254975781f90b65b157017 SHA-256: 3208a51eb87dce0c350818353fc0a53624f7a3202397dbb2bae00ea7323b4eb6
120 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 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and appears to be a lure for a technical document. The primary intent is to redirect the user to malicious infrastructure.

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.com/pify?keyword=electromagnetic+fields+wangsness+solution+manual+pdf
    • http://files.stefankehlenbach.com/uploads/1/3/1/4/131437987/59b786f4fbe301.pdf
    • http://files.aerospectech.com/uploads/1/3/1/3/131380213/180540.pdf
    • http://files.partoencasamujeressabias.com/uploads/1/3/0/7/130775714/11e2e31.pdf
    • http://files.perception-percepcion.com/uploads/1/3/1/6/131606125/4530865.pdf
    • http://files.cometsbaton.com/uploads/1/3/0/7/130775025/2785875.pdf
    • https://cdn.shopify.com/s/files/1/0428/4170/2567/files/84757359941.pdf
    • https://cdn.shopify.com/s/files/1/0432/9196/7652/files/sukoledokulasefamuvafa.pdf
    • https://cdn.shopify.com/s/files/1/0434/6337/7048/files/lujibaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30617095305.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/sosuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/5319/5165/files/hex_code_for_white.pdf
    • https://cdn.shopify.com/s/files/1/0430/2707/1127/files/rojudigetivuvironitanoli.pdf
    • https://cdn.shopify.com/s/files/1/0433/9784/1054/files/fuxopano.pdf
    • https://cdn.shopify.com/s/files/1/0433/6310/6968/files/5661858536.pdf
    • https://cdn.shopify.com/s/files/1/0432/8436/5476/files/24655585414.pdf
    • https://cdn.shopify.com/s/files/1/0435/1361/0392/files/mibubusupisumebexuja.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_off00005cf4.bin
9193f2a60e09fe5f7fda092977ba2dca54ba41191736b8a46fce6264df309a7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF4 5524 bytes
font_01_sfnt_off00006fbf.bin
1b02612e19fd8083cfc0f1e8edd104f3cf48c08774ca64ddb7e4f50d8a2bd097		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBF 11740 bytes

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