Malicious PDF — malware analysis report

Static analysis result for SHA-256 872c0c57073cd063…

MALICIOUS

PDF

38.4 KB Created: 2020-09-13 18:50:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90a725c2ceecd33aff3967d4a20b4787 SHA-1: 1f12e181f5fb9ced39c704332400e89a111b3911 SHA-256: 872c0c57073cd063e1d46208387f9aec4d1950bd684822c8ce14a1828e2cbbe5
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.club'. The document body, though heavily obfuscated, contains text suggesting a lure related to smoking cessation, and the embedded URLs indicate a link farm strategy. The primary malicious URL is 'https://ttraff.club/wix?keyword=the+illustrated+easy+way+to+stop+smoking+pdf', which likely leads to further malicious content or phishing pages.

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.club/wix?keyword=the+illustrated+easy+way+to+stop+smoking+pdf
    • http://files.thenappyworkshop.co.uk/uploads/1/3/0/7/130775893/7635755.pdf
    • http://files.showfancy.com/uploads/1/3/1/1/131163898/keleziworixi-jepuxibozodux-bodeworure.pdf
    • https://cdn.shopify.com/s/files/1/0438/0763/7661/files/housing_development_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0433/7657/4620/files/74295905247.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/17238909339.pdf
    • https://cdn.shopify.com/s/files/1/0437/5438/9665/files/rebanorixibes.pdf
    • https://cdn.shopify.com/s/files/1/0437/7985/0397/files/79633792194.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/jebarak.pdf
    • https://cdn.shopify.com/s/files/1/0432/0785/2192/files/je_vole_partition_gratuite.pdf
    • https://cdn.shopify.com/s/files/1/0429/2139/4343/files/bernard_marr_data_strategy.pdf
    • https://cdn.shopify.com/s/files/1/0437/7424/7069/files/60399031909.pdf
    • https://cdn.shopify.com/s/files/1/0437/0422/1846/files/46906107224.pdf
    • https://cdn.shopify.com/s/files/1/0435/9336/7710/files/92796709798.pdf
    • https://cdn.shopify.com/s/files/1/0439/2982/9544/files/present_and_past_tense_exercises_with_answers.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_off0000506f.bin
b21d37048ad235e0c0b8c3406544f887c6fb3eb70162447a1bd51d81ddfc26a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x506F 5660 bytes
font_01_sfnt_off000063a0.bin
1de0a84ddc3682c092ebb40bd29d8e1f467f5de3d2c9072baccf32fa9951152f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63A0 12664 bytes

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