Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e885980461272bb…

MALICIOUS

PDF

77.8 KB Created: 2021-05-23 11:00:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 875dd5ecd973ab8811024208fbcb3789 SHA-1: dd8e36bb8ee0bb21e4963bd31de50979b958418e SHA-256: 3e885980461272bb616628d8d449143fff4b53d70282a78a6c09e7d3320d7729
156 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'cheats for minecraft pe apk download' and embeds a link to 'fokemale.ru'. This URL is likely used for phishing or distributing malware. The PDF also contains a large number of external links, suggesting a link farm or SEO poisoning tactic, and ClamAV detected it as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://fokemale.ru/strik?utm_term=cheats+for+minecraft+pe+apk+download+v1.16.4.2+free
    • https://lamuwopinu.weebly.com/uploads/1/3/4/6/134632291/xofezi.pdf
    • https://vidozalenaw.weebly.com/uploads/1/3/4/8/134875831/633c4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mexesazaxasa/formation_barman_alternance_paris.pdf
    • https://s3.amazonaws.com/wutogugej/64380512844.pdf
    • https://s3.amazonaws.com/jexijer/amazon_stock_market_performance.pdf
    • https://uploads.strikinglycdn.com/files/a690b21e-cefe-4826-b994-73449b12710e/the_darkest_minds_alexandra_bracken_books.pdf
    • https://s3.amazonaws.com/meludav/jubogedupinura.pdf
    • https://s3.amazonaws.com/tizowodifi/4516970119.pdf
    • https://s3.amazonaws.com/kabisebax/16698732540.pdf
    • https://s3.amazonaws.com/vutame/how_much_does_a_honda_civic_battery_cost.pdf
    • https://s3.amazonaws.com/sakaburepagase/air_pollution_measurement_modelling_and_mitigation.pdf
    • https://s3.amazonaws.com/fadupazageraf/currency_symbols_font.pdf
    • https://s3.amazonaws.com/dugibabafod/96033914941.pdf
    • https://s3.amazonaws.com/donarepemi/access_database_employee_salary_administration_templates.pdf
    • https://s3.amazonaws.com/jinabom/49723992496.pdf
    • https://uploads.strikinglycdn.com/files/58014a42-ef0a-4be0-bec3-c900b59a7a40/como_resolver_una_composicion_de_funciones.pdf
    • https://s3.amazonaws.com/tapelu/kigagix.pdf
    • https://uploads.strikinglycdn.com/files/31511b0d-2124-4b03-ad3b-26f8b51ab1ce/is_there_a_reset_button_on_an_insinkerator.pdf
    • https://uploads.strikinglycdn.com/files/16120323-682e-413a-99d9-a780e475817d/95714551329.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_off0000efd6.bin
54e0410e55bc6e9212fba6455b180be11180f721e732597cc9d41c69cddeea7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD6 5972 bytes
font_01_sfnt_off00010424.bin
cb5e81a7eee623b699611458f93d35342e62ac50dd9f971de6bb62abc7b162c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10424 11136 bytes

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