Malicious PDF — malware analysis report

Static analysis result for SHA-256 62291c8d604d6ebc…

MALICIOUS

PDF

86.0 KB Created: 2021-04-07 08:56:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 6b9ebde2a61c8bdf3cdea77a84ee1e66 SHA-1: f842b5e38c4d13cedb2003de0c2a899d247b21e1 SHA-256: 62291c8d604d6ebc5202e1ee25f72863e9ef7cbf769490cc1db8167f7417776a
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one specifically pointing to a URL promising 'unlimited diamonds' for a game, suggesting a phishing or scam lure. The presence of a 'PDF_SEO_LINK_FARM' heuristic and ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent. While no scripts were explicitly extracted, the PDF structure and link farm indicate an attempt to redirect users to malicious sites.

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
  • 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.
  • 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://maypoin.ru/wix?keyword=my+singing+monsters+dawn+of+fire+unlimited+diamonds+mod+apk PDF link annotation
    • https://zanirifut.weebly.com/uploads/1/3/1/4/131407922/mekumudegufiwub-jarojabupa-xakimevaderilin-giwegijevi.pdfIn PDF document text
    • http://snapchat-alert.com/free_online_grammar_games_for_6th_gradeshfr7.pdfIn PDF document text
    • http://wiinorama.website/xoloxosekowuzevome1nz94.pdfIn PDF document text
    • http://usesalon.xyz/what_water_filter_is_needed_for_whirlpool_refrigeratorrl2ol.pdfIn PDF document text
    • https://vodexekuteb.weebly.com/uploads/1/3/0/7/130776001/9945813.pdfIn PDF document text
    • https://pitulero.weebly.com/uploads/1/3/2/6/132683003/loxusikewipabuvu.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/tikofaketonub/79388086755.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/seo_search_engine_optimization_bible.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/461ac5fe-fb6e-4f93-aceb-5b9b85e65bec/viravetokomekizebegiwes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a756890d-c6b7-453f-9326-af47f90042d9/mosegaxigorefizamukesudo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff87f364-1d50-4a22-ad37-7db94b334839/gagejelegunawefiluzun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60c6498d-eef1-4bdd-89a9-3a1d08115566/zekubewawutujijunox.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/bobegobeganemir.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/siluzivul.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/aiou_date_sheet_ssc_matric.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/allison_transmission_3000_series_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49d9e3e2-a5b3-44b5-aa21-2a37f2cf83fe/best_movie_making_apps_for_iphone_6.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/nuxozuvubezemikepalaxoxo.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/rivobubujirebow.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f91a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF91A 5624 bytes
SHA-256: 559b0835da7593617400e03c8ad01e91fbfeb72f40228a4fc12759f8efd07985
font_01_sfnt_off00010c54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C54 12044 bytes
SHA-256: a9a42620d94b66496d8ae2a5f2ff7bb776508671df28a02c77da9eea7f017136
font_02_sfnt_off00013466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13466 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

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