Malicious PDF — malware analysis report

Static analysis result for SHA-256 66e0d6288f097ba7…

MALICIOUS

PDF

72.0 KB Created: 2020-11-13 23:52:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 8d0853183829e161012927a2d86e1917 SHA-1: 18764ba31de77b727e019cc672a268e5903d3088 SHA-256: 66e0d6288f097ba7cc6462659fd3613fc2e3111fff1b74ac2e2c034a19bb57f2
154 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including a critical alert for a malicious redirector link and a machine learning classifier indicating high maliciousness. The embedded URL points to a known malicious domain, suggesting the document's primary purpose is to lure users to this site. No scripts were extracted, but the presence of a malicious link is sufficient evidence of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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?utm_term=the+crystal+fox+md In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376126/normal_5f8e42aeb0d7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488809/normal_5faa4406744ff.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/a25ff942-355c-4f4c-a33a-47b0da4a5523/woviruputixilawido.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d693fe11-9b0e-4893-9827-67033e1910b2/mijogolekodobilemalasu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07453648-04fa-46fb-88fe-bc3c7cd79bc8/85870513386.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/egans_chapter_15_workbook_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6beeba8-5e63-4782-a732-638f375317de/dish_hopper_3_self_install.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/23273258383.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/616c90d3-c813-4fd8-8b27-0cb65a2b0356/lifeline_home_phone_texas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4874ca10-6e78-4e70-b562-ef27c74058e2/jezije.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/alton_towers_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2bfdd71-34ac-48fb-b0ab-f03d28ea5c74/69414723819.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f639f2b3-534b-448f-bf33-d948fcb7648d/36478144813.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/655700aa-0b7d-43eb-87e3-0f7a80cc4816/healing_guide_ffxiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7914ae2c-57b6-4c5c-b297-a756b69d87da/curren_y_pilot_talk_1_zip.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_off0000ce01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE01 5012 bytes
SHA-256: 14ae439df823a311c843123ca46844d53e1cec2655c599d94c550bd82ca409ee
font_01_sfnt_off0000df1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF1B 11200 bytes
SHA-256: cd2e5d7a4060add7995ac4facca56e410247d8f3feec83f11fdcc8e08257cd4b
font_02_sfnt_off000104f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104F9 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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