Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d92fd5a25315237…

MALICIOUS

PDF

95.7 KB Created: 2021-06-10 02:07:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: eb97accbfba704ee405077f14890617d SHA-1: cfc6ba28a146c3ae087a06972d5fc977923369c0 SHA-256: 2d92fd5a2531523761804685f5942b8506f8b7fe678ad01763ca07154b069e04
126 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a link farm on disposable hosting, designed to redirect users to external URLs. The primary malicious URL identified is infrive.ru, which is presented as a search result for 'Harry Potter and the Sorcerer's Stone AR answers'. While no scripts were explicitly extracted, the PDF structure and external URL suggest a phishing or redirection attempt, likely leveraging embedded JavaScript for obfuscation or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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
  • 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.
  • 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://infrive.ru/pbw?utm_term=harry+potter+and+the+sorcerer%2527s+stone+ar+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485926/normal_601dd095277fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414156/normal_5ff00a799fad3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488822/normal_5feb6d79742dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408594/normal_5fe8e397f3639.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410214/normal_6066af4ebec90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470980/normal_6043df3b2549f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491451/normal_60668b23bdc8d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mudowomuxexo.pbworks.com/f/vafamaredobaso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4c873ab-6d6d-4516-9ad2-70e317d08b32/vofipupivusemewafopewejuv.pdfIn PDF document text
    • http://bopezijitex.pbworks.com/w/file/fetch/144997800/offline_racing_games_for_laptop.pdfIn PDF document text
    • http://wixugigir.pbworks.com/f/vavibonavebalolagovo.pdfIn PDF document text
    • http://vibasuvezuz.pbworks.com/w/file/fetch/144503667/49786483381.pdfIn PDF document text
    • http://pefagisunel.pbworks.com/f/30972031135.pdfIn PDF document text
    • http://vikowezanipe.pbworks.com/f/havering_sixth_form_college_term_dates.pdfIn PDF document text
    • http://zeranagaro.pbworks.com/w/file/fetch/144670269/tupofe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb893058-7470-4425-a499-7fbfb409b653/35365570177.pdfIn PDF document text
    • http://kesowununak.pbworks.com/w/file/fetch/144646911/zeserelolagejilater.pdfIn PDF document text
    • http://larabefejaji.pbworks.com/f/motorola_minitor_v_pager_manual.pdfIn PDF document text
    • http://wiliser.pbworks.com/f/36583684421.pdfIn PDF document text
    • http://tazijebep.pbworks.com/w/file/fetch/144427521/dd_pirate_ship_map.pdfIn PDF document text
    • http://bopezijitex.pbworks.com/w/file/fetch/144947802/41457523919.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE129 6416 bytes
SHA-256: 4257b5aed261ccb96d7b6b52587b843e34ad9d65b35b79aec213b77d78697daa
font_01_sfnt_off0000f0fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FD 5320 bytes
SHA-256: a06d66a1fb86db2990bac692a2b7f40e480db8098c381643ababc2a9289e383c
font_02_sfnt_off00010324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10324 12264 bytes
SHA-256: 84278bce21492b4953eac63bb772b8081a69a4a43bd7c98b6b86797a16fd3fa3
font_03_sfnt_off00012a2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A2A 11268 bytes
SHA-256: f0ae1da7960d797376c85c2648a5e63082520eecb267edef33936e3038eaad13
font_04_sfnt_off000150da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x150DA 16256 bytes
SHA-256: d9b6788e98d720ed34e7048aeb7a337db0b6f87b8f940ce258886e614f67cbc8
font_05_sfnt_off00016638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16638 1736 bytes
SHA-256: 551918360585b1590efa6fd2a215345b2f702067d151a0e4b48cfa7490b57960

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