Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1693ee009da2b8d…

MALICIOUS

PDF

83.5 KB Created: 2021-03-27 19:30:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: a929bb6f96f0d7afd80b745985f5e3de SHA-1: de10edfd5868728300ebc5763804e54d0aa379f6 SHA-256: f1693ee009da2b8db13fc1b0bbd801d24acac816238eecd5573f4437f21bebb2
136 Risk Score

Malware Insights

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

The PDF document contains a lure related to a 'Sony code for universal remote' which redirects to a suspicious URL. This URL is identified as a high-risk redirector for phishing, indicating the document's purpose is to trick users into visiting a malicious site. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/strik?utm_term=sony+code+for+universal+remote+chunghop PDF link annotation
    • http://zoomita.space/can_i_use_ps3_move_controller_on_ps4myqnd.pdfIn PDF document text
    • https://cdn.sqhk.co/zurefaxenov/ak0jaaZ/25048697566.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370053/normal_5fe196de611c0.pdfIn PDF document text
    • http://metalllift.ru/nurejese8gnz.pdfIn PDF document text
    • https://cdn.sqhk.co/jubawiwa/jiia7hg/vekuxiditovib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501208/normal_600bc5b14784d.pdfIn PDF document text
    • https://cdn.sqhk.co/zafupusapun/hdgdwie/poritelowagimalow.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/gjiKWo7/zombie_first_person_shooter_unblocked.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389801/normal_5fe8f4f9be520.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418796/normal_6002f207ac01d.pdfIn PDF document text
    • https://cdn.sqhk.co/sewenajete/jdDjdZr/forgeworld_warlord_titan_height.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458827/normal_5fd03b22be1db.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad65e565-62a4-4021-9648-ad9bf7d18826/47110804193.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e553950a-3d9d-4576-b606-fcd53112cc1a/7935089316.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/301cc04f-487e-4fd1-bf9a-54f870ab610e/vebawalazijomiko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f2bb38c-feaf-4b4f-baf0-960cc3627fb3/33108429148.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/zevug.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/fevakoxeruzofib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5432ba12-9174-408d-b9b9-44691bfa58b4/33061928782.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a018cc4-a0ca-43c4-86ff-c8d7fe9c5508/96796363534.pdfIn PDF document text
    • https://s3.amazonaws.com/musokejixami/48027473442.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/gipov.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/14532432206.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19f6040a-eaf8-4793-92ba-ddddf1d5da47/how_to_fix_svc_tire_monitor_saturn_aura.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_off000108e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108E7 5832 bytes
SHA-256: 909c06f6a1edc5bed8ee3db1bc3e67c57f39b50dc0fdad2ca0e38de163c708b5
font_01_sfnt_off00011cb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CB1 10312 bytes
SHA-256: 2c0ad7ee680dcd2e7884e5af4383e2d5f5bed7e2bc434a4a2bc04f8f46382e0f