Malicious PDF — malware analysis report

Static analysis result for SHA-256 977da6db38985f90…

MALICIOUS

PDF

69.0 KB Created: 2021-02-15 16:10:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4c6478c45421d642329cf471c1e2c187 SHA-1: 0bc8c2245fae03fabdfc99a4699848a26f7b7d63 SHA-256: 977da6db38985f902b05c8ab46b797d7c54078458db4c77515b6c66d5bbfe119
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which are part of a link farm hosted on disposable domains, indicating a phishing or redirection attempt. The document body, though heavily obfuscated, appears to be a lure related to a common search query. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to malicious sites for credential harvesting or malware delivery.

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://druttle.ru/strik?utm_term=how+do+you+change+a+truma+water+heater+element PDF link annotation
    • http://lojasamericanasbr.com/bali_tour_driver_and_guidexjpeu.pdfIn PDF document text
    • http://esportzmlevent.com/31613492354c0kok.pdfIn PDF document text
    • http://soul-felt.com/lenatuaqg10.pdfIn PDF document text
    • https://pumutetigowon.weebly.com/uploads/1/3/4/6/134699291/gujukisob-jologerupozipud-vekerapekegojo.pdfIn PDF document text
    • http://table-wait.com/safety_equipment_on_boardufjjg.pdfIn PDF document text
    • https://cdn.sqhk.co/nawakema/CQ2Qjel/best_way_to_get_organic_instagram_followers.pdfIn PDF document text
    • http://center-about.com/24171752276tnqrh.pdfIn PDF document text
    • http://changepass.online/fekakiwugenakojezapuzukij18rsl.pdfIn PDF document text
    • http://remontvorot24.com/gasoline_tank_truck_emergencies_guidelines_and_proceduresp7hb3.pdfIn PDF document text
    • https://dovenokitumenu.weebly.com/uploads/1/3/1/4/131482991/44aa753a850.pdfIn PDF document text
    • https://cdn.sqhk.co/xubulozirod/iihijjj/john_gba_lite_para_iphone.pdfIn PDF document text
    • http://reactivaperu-2020.com/clauses_worksheet_year_60ikf8.pdfIn PDF document text
    • https://levukuwaxumofet.weebly.com/uploads/1/3/1/3/131383949/1f2c10a2.pdfIn PDF document text
    • https://feliwisinawo.weebly.com/uploads/1/3/1/8/131856919/9b7b33dfbe0c72.pdfIn PDF document text
    • http://discovljzg.fun/toni_morrison_paradiseeyzr7.pdfIn PDF document text
    • http://shtancircul.site/556535522912oed.pdfIn PDF document text
    • http://lnstagramservicecopyrights.com/malformaciones_congenitas_del_rion_slidesharex9r2z.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D8 5332 bytes
SHA-256: e2eb81db6740d20abe98535d617ecb0222eb0169c3725340e3abfe74c5542bb9
font_01_sfnt_off0000e3e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E4 10252 bytes
SHA-256: 75041af9a55e335af9f79ef4ab22316a537be089c8159be36cfd3c01a0b19475

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