Malicious PDF — malware analysis report

Static analysis result for SHA-256 bef223b629b49e09…

MALICIOUS

PDF

73.7 KB Created: 2021-01-17 04:05:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 07c5283aad88ba7260cfa577d5d7fbe1 SHA-1: 5ed473db04c6d30f48c22d2ecc6ba62fd6642fb2 SHA-256: bef223b629b49e09e58d6b1a823da67c93a22f01ba492eecbd5dfc4a0c92ab78
184 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, specifically flagged as a redirector link to known malicious infrastructure. The document contains numerous embedded links, many pointing to disposable domains, suggesting a phishing or scam attempt to redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to facilitate initial access via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffine.ru/aws?utm_term=ielts+academic+sample+question+paper+pdf In PDF document text
    • https://site-1167942.mozfiles.com/files/1167942/who_infographics_antimicrobial_resistance_definition.pdfIn PDF document text
    • https://site-1203447.mozfiles.com/files/1203447/77063418723.pdfIn PDF document text
    • https://site-1168325.mozfiles.com/files/1168325/lijuwogazemojagizebuza.pdfIn PDF document text
    • https://site-1168144.mozfiles.com/files/1168144/chennai_super_kings_team_latest_news.pdfIn PDF document text
    • https://site-1189714.mozfiles.com/files/1189714/shark_attack_3d_galveston.pdfIn PDF document text
    • https://site-1172896.mozfiles.com/files/1172896/7215758323.pdfIn PDF document text
    • https://nerefowat.weebly.com/uploads/1/3/4/8/134856831/nemafepovobuval.pdfIn PDF document text
    • https://site-1171584.mozfiles.com/files/1171584/23187765951.pdfIn PDF document text
    • https://cdn.sqhk.co/gafokoru/chb0jbF/custom_sound_button_uk.pdfIn PDF document text
    • https://site-1243557.mozfiles.com/files/1243557/manual_car_driving_games_free.pdfIn PDF document text
    • https://site-1187779.mozfiles.com/files/1187779/mewelde_moore_love_boat.pdfIn PDF document text
    • https://sadaxolofomet.weebly.com/uploads/1/3/1/4/131453623/jubuperipafaj_jabos_sawikepulu_migubaxaxuzomeg.pdfIn PDF document text
    • https://xuvetopugoseja.weebly.com/uploads/1/3/4/4/134484667/bifujojoji-pikebiki-kanajunakovepu-papikubas.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://s3.amazonaws.com/litunux/full_hd_1080p_video_converter_free.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_off0000d682.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD682 5244 bytes
SHA-256: 4c0fc629c98680b2eb84e836acd66963567c7efdfa4084782bed6cd9b6b67e03
font_01_sfnt_off0000e833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE833 10336 bytes
SHA-256: 6e796091aaec5242a4c156f99075bbd891a376c9c24ea39c6b045cfe973cd337
font_02_sfnt_off00010b95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B95 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

Open this report in the interactive analyzer, or submit your own file for analysis.