Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d3ba7e00202a303…

MALICIOUS

PDF

44.4 KB Created: 2020-08-17 11:06:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7718125369d8c0a7899a9d9d35766d7 SHA-1: da87b8ef3cd6a576b29b1a761a246fa3ac6434ce SHA-256: 5d3ba7e00202a303c49607c68e7ef1e78817c9dbb8c5eddaf4de85edc53436ff
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of these links, 'https://ttraff.com/pify?keyword=pool+games++for+mobile', is identified as a known malicious redirector. This suggests the document is part of a link farm or SEO manipulation scheme designed to drive traffic to malicious infrastructure.

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=pool+games++for+mobile
    • http://files.bohemiacollections.net/uploads/1/3/1/3/131398406/a93bd4a33a4a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/fevedob.pdf
    • https://cdn.shopify.com/s/files/1/0437/6471/1575/files/super_mario_combat.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/livoxigugefeguvon.pdf
    • https://cdn.shopify.com/s/files/1/0436/9930/6649/files/activation_of_chakras_in_human_body.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1803/files/39054878979.pdf
    • https://cdn.shopify.com/s/files/1/0432/3019/9966/files/tuwijuto.pdf
    • https://cdn.shopify.com/s/files/1/0435/5224/3861/files/54076548030.pdf
    • https://cdn.shopify.com/s/files/1/0437/1477/3141/files/teripebawovajogez.pdf
    • https://cdn.shopify.com/s/files/1/0434/4371/6262/files/48311887296.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/watch_deadpool_online.pdf
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/96819612902.pdf
    • https://cdn.shopify.com/s/files/1/0437/3970/9589/files/dazagalosewazepomowusawiz.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_off00006fa6.bin
3e5df19190b4c4ae4fe1fcb5de82b4b47a70af8e2499daeeb1d2eb51fe49b08d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA6 5228 bytes
font_01_sfnt_off00008161.bin
2a9cdad8638268aaec6866b747668cb1cd8785dcead64ea742c86b693af3f477
pdf-font-stream PDF embedded font (sfnt) at offset 0x8161 10520 bytes