Malicious PDF — malware analysis report

Static analysis result for SHA-256 01fde11fe5e8cfb5…

MALICIOUS

PDF

79.7 KB Created: 2021-03-17 00:43:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9056ab35b08ce267f4c426ae54da52f4 SHA-1: 737fb0807cc3c25069acb234e78b7b3afeeef6f2 SHA-256: 01fde11fe5e8cfb510ea1e0534c7408cb21e7ca6bd343b1aa89ea2c5e92b1f6a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to search terms, suggesting a lure to a malicious website. ClamAV detection and ML classification strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://lozipotod.ru/wix?keyword=banjo+mandolin+strings
    • https://cdn-cms.f-static.net/uploads/4419628/normal_604823658dbc6.pdf
    • https://static.s123-cdn-static.com/uploads/4425917/normal_5fe0f265cd754.pdf
    • https://cdn.sqhk.co/rifebonapesi/iiXiiHW/16008830869.pdf
    • https://cdn.sqhk.co/gapekozuwa/iNuCgdA/cute_black_cat_wallpaper_for_iphone.pdf
    • https://static.s123-cdn-static.com/uploads/4403274/normal_5fc5f49089060.pdf
    • https://cdn-cms.f-static.net/uploads/4489730/normal_5fea30af1aa6d.pdf
    • https://static.s123-cdn-static.com/uploads/4408336/normal_5fce4fc4b6604.pdf
    • https://cdn-cms.f-static.net/uploads/4505326/normal_601aac947d716.pdf
    • https://cdn-cms.f-static.net/uploads/4385633/normal_60310efd73f8c.pdf
    • https://cdn.sqhk.co/tefupudoma/h7hicgg/furious_dragon_dragon_city.pdf
    • https://cdn-cms.f-static.net/uploads/4419206/normal_601d555828313.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/loranoduzuja/96118371164.pdf
    • https://uploads.strikinglycdn.com/files/8e570ae5-ae5d-48f2-93a5-37da19e116a3/what_does_the_yellow_wallpaper_represent.pdf
    • https://s3.amazonaws.com/lusabifef/my_grandmothers_house_poem_summary_in_tamil.pdf
    • https://s3.amazonaws.com/bewibiwat/vimajisitasake.pdf
    • https://uploads.strikinglycdn.com/files/18827453-0644-4d7e-bd85-2937a2a173b1/harry_potter_2020_lego_advent_calendar_day_23.pdf
    • https://s3.amazonaws.com/jadere/81247924573.pdf
    • https://s3.amazonaws.com/dugibabafod/52612053237.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7eb.bin
c93b8f2169f802fbb64a3cd43647b05e7b7db44f63c2dd1fea1153f845b4f5d2
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7EB 5272 bytes
font_01_sfnt_off000109c1.bin
892ad1d0ded326529412133bfbd1d5d988ae7dbb4fa39a73dcd3d306fbb6f161
pdf-font-stream PDF embedded font (sfnt) at offset 0x109C1 12044 bytes