Malicious PDF — malware analysis report

Static analysis result for SHA-256 1df53ad1f4dcc0ee…

MALICIOUS

PDF

62.0 KB Created: 2020-12-07 06:55:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d67fc95af296fff78545934da926e3dd SHA-1: d82502bb05b3c465796b1fb9fbab562ddbb645d7 SHA-256: 1df53ad1f4dcc0ee6414fb52fa1e98792e917d53d9618feb54d43e59d26cae2b
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://cctraff.ru/123?utm_term=silicone+nose+pads+for+ray+ban+glasses In PDF document text
    • https://sotivozorome.weebly.com/uploads/1/3/4/7/134733800/13cdfe9f497.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416802/normal_5fbcf73f7652c.pdfIn PDF document text
    • https://danifiwap.weebly.com/uploads/1/3/4/5/134585556/91513.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410433/normal_5fbb141a37ae6.pdfIn PDF document text
    • https://wodorolijuzawex.weebly.com/uploads/1/3/4/7/134770742/tidozuzot_giduz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0d49a16f6d44b07be6b5d/t/5fc4dc043570fb44d19b7427/1606736902889/jebotemis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bf2e0b4-9962-41e3-a6be-fcaeb31aed3e/46888663017.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/the_tempest_no_fear_shakespeare_act_5_scene_1.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5755088c99b6d37c610f4/t/5fcadce426a2be7f6dd84e69/1607130341181/air_traffic_controller_courses_uk_cost.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf62e9cb3e0f5771474d42/1606378218220/cif_state_wrestling_championships_2020_results.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB414 5668 bytes
SHA-256: 4ed2e71be37243ee1d79a3c3244af01bae17806b42719d8521679196107ca18a
font_01_sfnt_off0000c773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC773 10520 bytes
SHA-256: e5ac0952c8d679188267676f354bb636d5c45d98a1bfddba8efa1607e3b65473