Malicious PDF — malware analysis report

Static analysis result for SHA-256 d21f98a9058a421a…

MALICIOUS

PDF

75.7 KB Created: 2021-03-25 09:57:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 29fffed345c27512b0033c92b4dca8ba SHA-1: c3d98970e44060469c6cc09906c261313845bd5e SHA-256: d21f98a9058a421a825a47c689c32f4f23604050f33cdc7b9bc1a6ff4fae90fa
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting and exhibiting link farm characteristics, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/wix?keyword=mississippi+river+1900s PDF link annotation
    • http://wide-do.top/portfolio_120-watt_transformer_manualzzafy.pdfIn PDF document text
    • https://cdn.sqhk.co/votezevon/jdjajTV/dozewofazefarofawetepogol.pdfIn PDF document text
    • http://newyearshop.site/when_did_feminist_theory_starte7vn0.pdfIn PDF document text
    • http://podarokinsta24.online/botany_lab_manual_higher_secondarydwkju.pdfIn PDF document text
    • http://mixit.info/schwinn_ad7_airdyne_upright_exercise_bikeh06na.pdfIn PDF document text
    • https://cdn.sqhk.co/remirokus/ahijbjg/sifoniregorewa.pdfIn PDF document text
    • http://disclosures.space/pikupovonev857ju.pdfIn PDF document text
    • http://lojasamericanasbr.com/276398057378gm38.pdfIn PDF document text
    • https://cdn.sqhk.co/wusakituzu/jf7c7hg/feisty_pets_unicorn_name.pdfIn PDF document text
    • http://nukapag.getenjoyment.net/9519052660.pdfIn PDF document text
    • http://wodekenizowa.getenjoyment.net/is_an_account_that_consists_of_a_companys_cumulative_net_income.pdfIn PDF document text
    • https://cdn.sqhk.co/vubiwete/jdH01he/tribal_skull_wallpaper_for_phone.pdfIn PDF document text
    • http://my-credit.info/56279219521abgya.pdfIn PDF document text
    • http://hempmap.ru/99703619409siuqs.pdfIn PDF document text
    • http://cabinetshq.xyz/city_of_bones_book_series_reviewx73t4.pdfIn PDF document text
    • http://beamorem.com/schlage_connect_electronic_deadbolt_camelot_satin_nickel_-_be365_cam_619uxe2t.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xovolefewawex.atwebpages.com/25048449277.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/tawoxefus.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/how_heavy_is_a_bucket_truck.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/blues_piano_chords_and_scales.pdfIn PDF document text
    • https://ddf64d59-5240-4154-9987-17dfc28e22c7.filesusr.com/ugd/cec570_bbbae1d9c074432db830b2a021b2e54e.pdf?index=trueIn PDF document text
    • https://94cb5446-44f7-499c-8ddd-8d9df3a2db3d.filesusr.com/ugd/9b9c26_86c429fc50a14fda9e06d1cbbe0d69cd.pdf?index=trueIn 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_off0000ed62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED62 4984 bytes
SHA-256: af22787f88146938102f800021e90fc1f812954b79ec0eb9d3154eb84c90717d
font_01_sfnt_off0000fe7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE7F 10520 bytes
SHA-256: 61656b6f3d734ed9f6659827b13964c08ce8e76507592a42fb75843c28353153

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