Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d3aba021d28dfc2…

MALICIOUS

PDF

47.8 KB Created: 2020-08-19 06:55:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d26e8e4a9ea048974d2b4ffacf089f09 SHA-1: 00dbb9cfc4447cde8e4fcccaaa6b01faca054d24 SHA-256: 2d3aba021d28dfc2c1679d751cd1c6a0ff275ff84fb7720c79d5048684161697
152 Risk Score

Malware Insights

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

This PDF document contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, contains the text "Pirates of caribbean full music" and a URL that appears to be a lure. The PDF_SEO_LINK_FARM heuristic also indicates a large number of external links, suggesting a link farm or distribution mechanism for malicious content.

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=pirates+of+caribbean+full+music
    • http://files.tcssci.com/uploads/1/3/1/0/131070526/pedafizofava.pdf
    • http://files.bibrigade.org/uploads/1/3/0/7/130775563/949595.pdf
    • http://pezik.nancykasprzyk-colorado.com/uploads/1/3/0/7/130738531/7337249.pdf
    • http://files.goplacesseefaces.com/uploads/1/3/0/7/130775245/d9cb85826.pdf
    • https://cdn.shopify.com/s/files/1/0457/7093/2390/files/zojujekekadek.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13578549785.pdf
    • https://cdn.shopify.com/s/files/1/0430/2379/4337/files/arihant_objective_general_knowledge_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/5808/6559/files/61922049610.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/wulazizukijebiwos.pdf
    • https://cdn.shopify.com/s/files/1/0429/1110/5191/files/2151050815.pdf
    • https://cdn.shopify.com/s/files/1/0435/9821/7378/files/acca_f3_exam_kit.pdf
    • https://cdn.shopify.com/s/files/1/0440/7522/1144/files/need_for_speed_most_wanted_bmw.pdf
    • https://cdn.shopify.com/s/files/1/0433/4066/0895/files/afrisam_bursary_application_form.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f85.bin
891065c424f78bc90f6273df507b5ded793c2b370f37a3d8563a6dd3803e3467
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F85 5048 bytes
font_01_sfnt_off0000808d.bin
c6d3d25abcea0b405a2022cf272216e4b512a287170e1d774d301781a10d4ac4
pdf-font-stream PDF embedded font (sfnt) at offset 0x808D 10540 bytes
font_02_sfnt_off0000a4aa.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4AA 4324 bytes