Malicious PDF — malware analysis report

Static analysis result for SHA-256 634bdf6ef795179e…

MALICIOUS

PDF

41.6 KB Created: 2020-08-21 11:57:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47361b3fba4266487c64adefb53df5c3 SHA-1: 4152c285a6d42e8c5ccb0ab5e37e9a3d86a3d70a SHA-256: 634bdf6ef795179e3fc4aee4bc74d5b48f6c3e246e05105f61bb75338ff99faf
154 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'invitation templates for baby shower' and embeds a large number of external links, many pointing to Shopify and other domains. One critical heuristic indicates the PDF links to known malicious redirector infrastructure, specifically 'ttraff.cc', which is used to obscure the final destination. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic, potentially to distribute malicious content or improve search rankings for malicious sites. No scripts were extracted, but the overall structure and embedded links point towards a malicious document designed for obfuscation and redirection.

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.cc/pify?keyword=invitation+templates+for+baby+shower
    • http://files.peterbeyls.net/uploads/1/3/0/9/130969984/gunaganifemunomuxexi.pdf
    • http://doregegam.firstchristiantexascity.org/uploads/1/3/1/4/131437421/bimukerufigenux-mubekanijupo.pdf
    • http://files.itisifairytales.com/uploads/1/3/1/4/131454304/2609505.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/3491/8568/files/linolapizuzewet.pdf
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/before_the_flood_student_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/1409/3986/files/docker_modify_image.pdf
    • https://cdn.shopify.com/s/files/1/0432/8361/1801/files/badivowobozoxekusosorino.pdf
    • https://cdn.shopify.com/s/files/1/0433/4888/5662/files/neger.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/raloxejimikaboz.pdf
    • https://cdn.shopify.com/s/files/1/0435/5322/6913/files/basel_3_lcr.pdf
    • https://cdn.shopify.com/s/files/1/0445/9390/5828/files/pdf_biblia_de_estudio_dios_habla_hoy.pdf
    • https://cdn.shopify.com/s/files/1/0429/7277/4556/files/grade_10_biology_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0437/4413/3281/files/21234209553.pdf
    • https://cdn.shopify.com/s/files/1/0440/8636/2264/files/assessing_the_risk_management_process_iia.pdf
    • https://cdn.shopify.com/s/files/1/0434/4987/6630/files/mensagem_fernando_pessoa_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0438/0593/3730/files/welup.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f89.bin
bd55b608a9fa23d09eb75ff66bac97a5b69b89762be2fbd8ead6c414d84c0f22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F89 5260 bytes
font_01_sfnt_off00006141.bin
157468c399b24c0ff081d9990c5f1d8c99c0a518a73c659570ac1251691617e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6141 13796 bytes
font_02_sfnt_off00008b66.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B66 4324 bytes

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