Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc88e5ed6cc047ab…

MALICIOUS

PDF

80.2 KB Created: 2021-03-09 05:40:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 663ebea74b00ad13c2b9783ebf0ac9ff SHA-1: 097e10e751d553865309fdca649ab6c0e1215769 SHA-256: fc88e5ed6cc047ab9a2ab7940f03d00640ed3d07d3201db6bb3bd1663ed0afb1
134 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs and a heuristic firing for PDF_SEO_DISPOSABLE_LINK_FARM indicates a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/strik?utm_term=after+we+fell+pdf+google+drive PDF link annotation
    • http://tuzazigigub.iblogger.org/appium_android_driver_url.pdfIn PDF document text
    • http://nout-prokat.website/danza_clasicalawls.pdfIn PDF document text
    • http://idealica-italiaufficiale.site/turbochef_oven_recipes1l7kw.pdfIn PDF document text
    • http://smeshnoykir.space/imperial_marchrvi8p.pdfIn PDF document text
    • http://italia-doc.fun/blank_fraction_barsue151.pdfIn PDF document text
    • http://imedo.ru/mamusefamuxorugapupufatafsggys.pdfIn PDF document text
    • http://filmera.ru/prayer_of_jabez_online_book4zlbp.pdfIn PDF document text
    • http://iceteas.space/zejukadufuynmrm.pdfIn PDF document text
    • http://jadebey-x.com/79861714200elx87.pdfIn PDF document text
    • http://boevoenlp.com/today_s_forecast_cleveland_ohiornyy6.pdfIn PDF document text
    • http://wellwork.site/delta_gateway_4_in_1_crib_assembly_instructionsebslw.pdfIn PDF document text
    • http://m-laskin.ru/gabajlrkp0.pdfIn PDF document text
    • http://opendouche.xyz/65904168865za4f6.pdfIn PDF document text
    • http://copyrightram.net/dj_turntable_mixer_freerpcah.pdfIn PDF document text
    • http://onlinekartiadesi.com/pirikaradomekadu8qdvc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://xaguxebijop.epizy.com/vaxujorigixijob.pdfIn PDF document text
    • http://vefugiw.epizy.com/laravel_blade_form_hidden_field.pdfIn PDF document text
    • http://filirepakej.epizy.com/nowadif.pdfIn PDF document text
    • http://lukegijabezul.rf.gd/bizesariludetinogifemufo.pdfIn PDF document text
    • http://digudago.rf.gd/95819411312.pdfIn PDF document text
    • http://nojoboxeji.epizy.com/dc_train_schedule.pdfIn PDF document text
    • http://pitodisile.epizy.com/tekotamagewobubotu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f21f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21F 4644 bytes
SHA-256: 6a4905d6b00b214acc05e0c76efa89614b2fa9e9b240bd2ccbde451b422524b7
font_01_sfnt_off00010218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10218 10248 bytes
SHA-256: 4f21c5383e1df4fa49bd5327aa5f5e862a03fe7da5101b074ebf8ef33ab1241e
font_02_sfnt_off0001253b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1253B 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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