Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac7601f288076547…

MALICIOUS

PDF

44.3 KB Created: 2020-08-13 23:03:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc70c22266641032f9da271be9c34073 SHA-1: aeac7f77da03afe73df1f429f66bd907285810e8 SHA-256: ac7601f288076547523e625287df4323575a9dadb7299b9364a665f553faf5cc
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a link farm hosted on cdn.shopify.com, likely for SEO manipulation. One critical heuristic identified a direct link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=gta+3+android+aptoide', which is presented in the document body as a lure for 'Gta 3 android aptoide'. This indicates a social engineering attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=gta+3+android+aptoide
    • http://files.aislingrichmond.com/uploads/1/3/1/0/131070161/5ff42362.pdf
    • http://files.candacedowning.com/uploads/1/3/1/3/131378952/rajejidiruni_lezibevafexener_mipuwegop.pdf
    • http://valupi.essexvet.com/uploads/1/3/2/3/132303382/4650980.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7261/files/futopulukujik.pdf
    • https://cdn.shopify.com/s/files/1/0428/2921/7958/files/18_chun_li_mugen.pdf
    • https://cdn.shopify.com/s/files/1/0433/5904/3749/files/79155614518.pdf
    • https://cdn.shopify.com/s/files/1/0437/6035/3429/files/mastery_george_leonard.pdf
    • https://cdn.shopify.com/s/files/1/0440/6244/1637/files/timken_cylindrical_roller_bearing.pdf
    • https://cdn.shopify.com/s/files/1/0428/3059/4204/files/xiruwuko.pdf
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/dipofuno.pdf
    • https://cdn.shopify.com/s/files/1/0432/6578/6006/files/mugajalafusijew.pdf
    • https://cdn.shopify.com/s/files/1/0429/3797/4950/files/mixture_and_alligation_questions_with_solution.pdf
    • https://cdn.shopify.com/s/files/1/0434/2526/7877/files/67559811322.pdf
    • https://cdn.shopify.com/s/files/1/0437/9662/7618/files/lee_modern_reloading.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/livoxigugefeguvon.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_off000067d8.bin
fb73a85e16e8afeec6588820319703a9bdd065187acb391eb08f4bc80b6caf1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67D8 4936 bytes
font_01_sfnt_off000078b2.bin
15b3810cfb69d26aec867bbfe43d4c98f2532e0525fca225f431f21317e55423		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78B2 14236 bytes

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