Malicious PDF — malware analysis report

Static analysis result for SHA-256 216ab9baf861465c…

MALICIOUS

PDF

83.6 KB Created: 2021-03-13 15:34:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: afb70b0dee564d2448a2e418fe5d8b1f SHA-1: adfdb7a7361997847366e4c85549ce738f6a5e69 SHA-256: 216ab9baf861465c0a977475ca904fe8df9a12bfc8b527f8f575667e93004c52
126 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to disposable hosting, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, contains keywords related to 'tourist place pdf' and 'wkhtmltopdf', likely a lure to disguise the malicious nature of the links.

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 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://lozipotod.ru/award?keyword=odisha+tourist+place+pdf PDF link annotation
    • http://fuvisetitisenon.mypressonline.com/wolf_appliance_repair_near_me.pdfIn PDF document text
    • http://puzodimodopa.22web.org/how_to_fix_xbox_one_controller_home_button.pdfIn PDF document text
    • http://nuwevabufa.mypressonline.com/que_es_un_producto_artesanal_y_sus_caracteristicas.pdfIn PDF document text
    • http://mojadejazisapa.sportsontheweb.net/jorokebuwafav.pdfIn PDF document text
    • https://makumagem.weebly.com/uploads/1/3/4/3/134373862/damero-molepusud-xenoxatu.pdfIn PDF document text
    • https://dokegofixak.weebly.com/uploads/1/3/0/8/130873830/06bb71bba37321.pdfIn PDF document text
    • http://bafedudovodamo.medianewsonline.com/is_the_jedi_path_canon.pdfIn PDF document text
    • https://pamaxorakumi.weebly.com/uploads/1/3/4/0/134019068/kekokefefulo.pdfIn PDF document text
    • https://bezofaxifi.weebly.com/uploads/1/3/1/6/131606652/f4f5b08892b4e08.pdfIn PDF document text
    • http://kusowuwazugup.22web.org/income_guidelines_for_snap_in_pennsylvania.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jenesigafepi.epizy.com/tijojevojowivobiro.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/65875547832.pdfIn PDF document text
    • http://bibirosomuxir.epizy.com/berkeley_group_holdings_plc_annual_report_2017.pdfIn PDF document text
    • http://pububuvugesi.rf.gd/microsoft_project_2010_for_dummies.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/plot_of_13_reasons_why_season_2.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/devexpress_viewer_toolbar.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/75812061255.pdfIn PDF document text
    • http://biwosagamivi.myartsonline.com/diablo_3_season_22_builds_wizard.pdfIn PDF document text
    • http://wobirazegezuw.epizy.com/learn_python_the_hard_way_videos.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_off00010b6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B6D 5268 bytes
SHA-256: 9ce03566129db1ef0144986c04e8fa370a41659f4479c5ba3b9198f15b4506c6
font_01_sfnt_off00011d51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D51 10640 bytes
SHA-256: 46b777583e5e7417afd3f2374624e2d936d581396bc259f479e3b925259653e9

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