Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b5e5e38271c678…

MALICIOUS

PDF

48.4 KB Created: 2020-08-26 05:09:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0af5cde78bf17763a591750f5234a17d SHA-1: 8f801280808395cb5848ccf07326d665f3cf2cce SHA-256: 60b5e5e38271c678862290ce257bd39e6fcae33a45b6fc5bbd5a7151a3e28441
154 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified as 'ttraff.ru'. The presence of numerous external links, many pointing to benign Shopify URLs, suggests an attempt to obscure the malicious redirector. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing or scam attempt, likely delivered as a spearphishing attachment.

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.ru/pify?keyword=cataclysm+dda+artifacts
    • http://files.lauranaomiartisan.com/uploads/1/3/1/4/131406841/0cfd14c4cbe.pdf
    • http://sugexez.openthedoorleadership.com/uploads/1/3/1/4/131453558/dadixexoxovore_zezax_zigitetob.pdf
    • http://files.thehivepto.com/uploads/1/3/0/7/130775516/6772745.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/8315/9957/files/backup_text_messages_android_without_app.pdf
    • https://cdn.shopify.com/s/files/1/0440/4363/2805/files/32139604073.pdf
    • https://cdn.shopify.com/s/files/1/0437/3997/1738/files/minerals_in_thin_section_dexter_perkins_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/28991575990.pdf
    • https://cdn.shopify.com/s/files/1/0433/6130/4728/files/86345576434.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4665/files/daleguma.pdf
    • https://cdn.shopify.com/s/files/1/0428/4507/7660/files/44765497151.pdf
    • https://cdn.shopify.com/s/files/1/0433/7103/6822/files/automated_guided_vehicles_market_leader.pdf
    • https://cdn.shopify.com/s/files/1/0431/1760/9122/files/ilustracion_creativa_del_voto_de_los.pdf
    • https://cdn.shopify.com/s/files/1/0431/1197/3025/files/redadiwajiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/0884/2152/files/23342569211.pdf
    • https://cdn.shopify.com/s/files/1/0431/0558/3266/files/61296401350.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_off000072d2.bin
c3393019e7b66aaa0fa589905af8ee4ecff99cc84d4a45d86c872b94de202d8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72D2 4748 bytes
font_01_sfnt_off000082f5.bin
2f72d5d1d9d787e6c92f2fcd28e513c190872336ab1b1edcd85c06e5485c78b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82F5 10420 bytes
font_02_sfnt_off0000a69e.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA69E 4324 bytes

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