Malicious PDF — malware analysis report

Static analysis result for SHA-256 8545f09fcc1ade8a…

MALICIOUS

PDF

78.7 KB Created: 2021-03-17 18:23:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 9365f7ab0c18807f9345b976280c2599 SHA-1: df16a390f9c8cb1bb42b27dfc1d2b603f5c3096e SHA-256: 8545f09fcc1ade8aa938b52908cd5b58c776d5f093fcce73da0351f67b71f559
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with several pointing to disposable hosting and potentially acting as link farms or redirectors to malicious content. The PDF structure and embedded URIs suggest an attempt to trick users into visiting these sites, likely for phishing or to download further malicious payloads.

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/award?keyword=benefits+of+using+technology+in+the+classroom+pdf PDF link annotation
    • http://thechambre.xyz/what_is_blast_protection_in_minecrafton4g0.pdfIn PDF document text
    • http://kpovli.ru/gusolirw8vc.pdfIn PDF document text
    • https://lopadedabebaf.weebly.com/uploads/1/3/4/8/134897987/sofaguji.pdfIn PDF document text
    • https://cdn.sqhk.co/nogawevorus/iF6no8N/super_sergeant_shooter_2.pdfIn PDF document text
    • http://kindraretterath.com/toket1se7a.pdfIn PDF document text
    • https://nupigefaxobabu.weebly.com/uploads/1/3/1/0/131070289/1de553f2b47e5.pdfIn PDF document text
    • https://mafugefowodofo.weebly.com/uploads/1/3/1/3/131378796/5308453.pdfIn PDF document text
    • http://lg-supportteam.com/top_100_law_of_attraction_quotes_from_the_secret_part_2tkhjp.pdfIn PDF document text
    • https://waruzakelejabu.weebly.com/uploads/1/3/4/6/134600446/jadulofojoferig.pdfIn PDF document text
    • https://cdn.sqhk.co/mirofifuba/hfXijjb/declaration_of_war_ww2_speech.pdfIn PDF document text
    • https://cdn.sqhk.co/burexewejam/hftdijz/zombie_evil_hack_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gigijuke/ILgS0jd/moviestarplanet_hackers_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/turanexode/GzSvMie/idle_tap_strongman.pdfIn PDF document text
    • http://torchqbfl.fun/94851626328m9bip.pdfIn PDF document text
    • https://cdn.sqhk.co/pulijidapis/dZ150gd/tonekesudesidakimizimor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuvivitir.rf.gd/measuring_biological_diversity.pdfIn PDF document text
    • http://xevikosurozogin.rf.gd/cute_couple_wallpaper_full_hd.pdfIn PDF document text
    • http://fetijuvutod.epizy.com/login_form_template_html_css_free.pdfIn PDF document text
    • https://b760d8db-9746-4821-aa2b-94c9f806d328.filesusr.com/ugd/26ce45_7686c17d3f5542628e9e7ca6f7112714.pdf?index=trueIn PDF document text
    • http://lapumugafo.rf.gd/uniform_crime_report_weaknesses.pdfIn PDF document text
    • https://1d812fcc-cfc3-4558-a870-56fc5b7f4c2e.filesusr.com/ugd/754d94_4a86ffe0c9024dd889bc8407afa98ab4.pdf?index=trueIn PDF document text
    • http://dogamesesokuj.rf.gd/wd_my_cloud_mirror_replace_hard_drive.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_off0000f454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF454 5720 bytes
SHA-256: a622fc9b315ac04fc9e2636ab254429e1cedff72cc3a541d619d4ceffeda7f45
font_01_sfnt_off000107b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107B2 10960 bytes
SHA-256: 1a245016cdb784a062d33643e583182d278e840ea87b4bf951d8b923c3828936

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