Malicious PDF — malware analysis report

Static analysis result for SHA-256 a65858946751854e…

MALICIOUS

PDF

37.4 KB Created: 2020-11-09 17:18:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b183594b2bb1be5c9d9c4ac6184f1c3b SHA-1: bcbb3750ca9afce4bdaf09ce03d28c42b37002d1 SHA-256: a65858946751854eafbbf054f6990500dadc295e15dc36c7836ecf8118a3b554
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?keyword=cmx+theater+burnsville+mn'. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the nature of the PDF and the embedded malicious URL suggest it's designed to lure users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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://gettraff.ru/123?keyword=cmx+theater+burnsville+mn In PDF document text
    • https://pamuvomamutafa.weebly.com/uploads/1/3/4/3/134305197/223986.pdfIn PDF document text
    • https://rewazuxaroro.weebly.com/uploads/1/3/4/3/134341361/tifakebivejet_bagunezilu_lagadimegawenug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/8f1ab232-144c-4d8b-aa3d-a97ad6ca6d98/rerowikagomoludile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62922de6-4a3b-4e4e-b93c-47b4fbee3ba2/battle_brothers_cheat_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/download_pandora_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5c261ed-846e-4d67-adff-16d4f0404834/14564110817.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/87737843293.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5e9b34b-03ed-476b-9665-e5446ad325da/40138404491.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/surah_yaseen_file_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3eaa93b1-f688-4976-871b-b92759069676/m-audio_studiopro_3_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a18e1be6-7251-4c65-b1f9-ced53d8a545d/distance_and_displacement_worksheet_physical_science.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6945a331-cfc5-4b32-8cfe-29dcb5cad81f/futuwuzitewamunesonax.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000456b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x456B 4988 bytes
SHA-256: 6e4b1b50f20c650d26b77e0f7a8514384d3d80b2c459a18243b2b69b625a6c90
font_01_sfnt_off0000563b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x563B 10924 bytes
SHA-256: 1c7fab1463035f345cf57f3b653e4334038fea2c69dc95ac3ce733d73de590bd
font_02_sfnt_off00007ad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD0 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f