Malicious PDF — malware analysis report

Static analysis result for SHA-256 0674aade10960353…

MALICIOUS

PDF

41.4 KB Created: 2020-08-12 12:58:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e409bded5a01fd274a1e5f5c6c771e2e SHA-1: 4f241e9023422b979206d38111a2834d92f81cd0 SHA-256: 0674aade109603534ffa305a53536c18e0f5897ae6b48619b979495462b34198
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links, including one to a known malicious redirector at "https://ttraff.com/pify?keyword=corel+draw+x6+tutorials+pdf+free+download". The document body also contains a large number of embedded URLs, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute malicious content. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=corel+draw+x6+tutorials+pdf+free+download
    • http://files.frederickdeeben.com/uploads/1/3/1/3/131378999/f0823f542.pdf
    • http://mefanisu.neddnews.com/uploads/1/3/1/1/131164250/9fb489ef2e947.pdf
    • http://files.genuinely-younique.com/uploads/1/3/0/8/130814297/subujojezodafamibine.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/masiwirerakedesobuwiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/50927611118.pdf
    • https://cdn.shopify.com/s/files/1/0434/7854/8630/files/always_with_me_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/1548/7135/files/46969902173.pdf
    • https://cdn.shopify.com/s/files/1/0437/7231/3751/files/aha_guidelines_valvular_heart_disease_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/5897/0280/files/programme_garorock_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/57381854498.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/angelika_neuwirth.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/polyembryony_in_insects.pdf
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/drenagem_linftica_para_gestantes.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/wafupixeba.pdf
    • https://cdn.shopify.com/s/files/1/0437/2329/2840/files/nilexoferewa.pdf
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/audiovisual_translation_subtitling_translation_practices_explained.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3645/files/vatopesipovapa.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063f4.bin
8fce47fc2e917540d8aec5a55d27743ecdf5b0e46e38e559e2dc6d6abc560a92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63F4 5252 bytes
font_01_sfnt_off000075fa.bin
4e671e3edb67818bfa6a4ed635444e70744a542b1a7ec43192764fe6b33bedb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75FA 10184 bytes

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