Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f32870bb98322cd…

MALICIOUS

PDF

36.1 KB Created: 2020-08-21 21:44:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76303e93cb8b52d6f120875d67375a2a SHA-1: e413c69037fd53fc794f989ed4f96904631b41d0 SHA-256: 2f32870bb98322cd8dc916036679094d25f9d144cbde27ed757fa7813e0eea5a
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one prominent link disguised as 'Navy brag sheet instruction'. This link, 'https://ttraff.ru/pify?keyword=navy+brag+sheet+instruction', is identified as a malicious redirector. The document's structure and embedded links suggest a phishing or redirection attempt to deliver a malicious payload.

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=navy+brag+sheet+instruction
    • http://nedep.theadminshub.com/uploads/1/3/2/7/132712116/xesejufu_birudolemobatid.pdf
    • http://files.fernandoulibarri.com/uploads/1/3/0/7/130739116/tozumimedimurekos.pdf
    • https://cdn.shopify.com/s/files/1/0440/8714/8709/files/besivuwe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0581/2633/files/minecraft_skyblock_apk_indir.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mijafovaginidobu.pdf
    • https://cdn.shopify.com/s/files/1/0449/2469/8791/files/ielts_writing_task_2_samples_band_6.pdf
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/xikatigipiforabiremadaj.pdf
    • https://cdn.shopify.com/s/files/1/0440/8541/1990/files/litam.pdf
    • https://cdn.shopify.com/s/files/1/0435/6666/1800/files/xuwutigejabeviponisebevug.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/80804151078.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/vavawujawolaxunuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5763/files/avancemos_4_textbook.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_off00004f7f.bin
71885f8fc82caca672af622e5d61b85a0c0cfb14be4b500f2a975131194a0543		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F7F 5300 bytes
font_01_sfnt_off0000618d.bin
0799e2ff9361db07dc6b8dbd9848a1478b1a3384a480020bf70905881d84b5ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x618D 10068 bytes

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