Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3ed1b239d6f7a3e…

MALICIOUS

PDF

69.2 KB Created: 2021-02-09 15:04:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 14f5c898a174dceee05b679ee5bfe92f SHA-1: 0b08362e70b60b6640ec1e89f71686f0bf8d4751 SHA-256: d3ed1b239d6f7a3ea499ae8cf79e7eeb35a0aa6eebcd28b78b2bae56ddbfa3a3
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by multiple heuristics and a machine learning classifier, indicating it is likely a phishing or malware delivery attempt. It contains a link farm with numerous URLs, including a known malicious redirector, designed to lead users to potentially harmful content. The document body, though heavily obfuscated, suggests a lure related to 'cheat engine' software, aiming to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://crophysi.ru/wb?keyword=latest%20cheat%20engine%20for%20pc%20free In PDF document text
    • https://dimebogative.weebly.com/uploads/1/3/1/4/131406505/nisidubefetowow.pdfIn PDF document text
    • https://cdn.sqhk.co/rekewuneboxu/f1jbsja/pocket_rogues_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/dodamewope/icjey6o/bandi_chhor_divas_greetings.pdfIn PDF document text
    • https://dopilefuma.weebly.com/uploads/1/3/4/7/134733068/9429619.pdfIn PDF document text
    • https://zojufagilazit.weebly.com/uploads/1/3/0/9/130969654/wepudizipaxer.pdfIn PDF document text
    • https://cdn.sqhk.co/wikaraxixi/upAUSij/arkham_horror_card_game_investigators_list.pdfIn PDF document text
    • https://rozinezo.weebly.com/uploads/1/3/1/6/131636990/94d2b43f31ea44.pdfIn PDF document text
    • https://towipikegogu.weebly.com/uploads/1/3/4/6/134690187/xibozakive.pdfIn PDF document text
    • https://cdn.sqhk.co/dutararopat/jbGhEhc/gun_range_bar_nyc.pdfIn PDF document text
    • https://dodilepu.weebly.com/uploads/1/3/4/4/134444379/5080323.pdfIn PDF document text
    • https://fumirufax.weebly.com/uploads/1/3/1/8/131856188/403741.pdfIn PDF document text
    • https://mixabukosi.weebly.com/uploads/1/3/4/4/134479433/lenukitufofige_ginorematixufif_lesupose_nesetanuw.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/HTFgeLO/oneplus_6t_theme_for_miui_10_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/two_column_spreadsheet_template.pdfIn PDF document text
    • http://fogesogorukob.epizy.com/nombre_rationnel.pdfIn PDF document text
    • http://xewewiwuxadul.rf.gd/13840789489.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/41147118439.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/emploi_t_canada_2019_guide_du_demandeur.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_off0000d22f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD22F 5188 bytes
SHA-256: f7a1d2752529aca70f8623b0f98f6ba994a0c4ce5de307b82599f26ae1a048e5
font_01_sfnt_off0000e3d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D5 10608 bytes
SHA-256: 805d58184923b845b13e769aef134a292c5312e6dd40daf1298d30122faec2b0

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