Malicious PDF — malware analysis report

Static analysis result for SHA-256 d79d20bc99520dba…

MALICIOUS

PDF

40.2 KB Created: 2020-08-16 20:19:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 522a1016deaab83625d464572da3a5f9 SHA-1: f63c4eae7ab02742d10b6c79ce5683d0f4bc55a6 SHA-256: d79d20bc99520dbabff5ac9748a62791d8984c7a2902713f93d81dc293755042
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 'https://ttraff.cc/pify?keyword=video+kartun+anak+islami+lucu'. This URL is likely used to redirect users to a malicious site. The document also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com, suggesting an attempt to game search engine results or distribute malicious content. No scripts were extracted, but the presence of a malicious redirector is sufficient evidence of a malicious intent.

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.cc/pify?keyword=video+kartun+anak+islami+lucu
    • http://files.unclejsweets.co.uk/uploads/1/3/0/7/130775563/voritusir-fimefegedapukuk-werenadokovolal-pexuza.pdf
    • http://files.carrieblanche.com/uploads/1/3/0/7/130775867/3418204.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/19205461063.pdf
    • https://cdn.shopify.com/s/files/1/0434/2333/4567/files/fokamudek.pdf
    • https://cdn.shopify.com/s/files/1/0430/4856/6933/files/mabizironumebemabadevusa.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/william_finbar_kennedy.pdf
    • https://cdn.shopify.com/s/files/1/0432/9255/7467/files/94245433591.pdf
    • https://cdn.shopify.com/s/files/1/0436/9262/1978/files/39749978723.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5431/files/67798073251.pdf
    • https://cdn.shopify.com/s/files/1/0433/1955/8299/files/apparel_industry_in_sri_lanka.pdf
    • https://cdn.shopify.com/s/files/1/0430/8425/1285/files/2839340190.pdf
    • https://cdn.shopify.com/s/files/1/0450/6412/6616/files/guitar_player_repair_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/wasiworokiberufe.pdf
    • https://cdn.shopify.com/s/files/1/0430/1396/3929/files/57870771990.pdf
    • https://cdn.shopify.com/s/files/1/0449/2463/3243/files/logic_games_for_dummies.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_off00005e66.bin
d58512c040d9b8904edc8ba1de68d40ae6eeff0942e7a97155e3a6ec1717319d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E66 5116 bytes
font_01_sfnt_off00006fb6.bin
829cc1453dabd356d92fa36599d2b1379f051a888b2fe8471299ae5995ff4361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB6 11364 bytes

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