Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7a0713c2a01fb03…

MALICIOUS

PDF

75.6 KB Created: 2021-03-10 20:50:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: c0e368b74b2ef60ee5301d419be773a5 SHA-1: 9979ce9f945a94910ea92896e658bf51f90ea162 SHA-256: b7a0713c2a01fb037afe655ea9bc4835a58998bb63d80679e65552b05b70d673
184 Risk Score

Malware Insights

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

The PDF contains multiple links to disposable domains and known malicious redirectors, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains references to 'creed full movie in tamilrockers', suggesting a lure to attract users to click on malicious links. The ML classifier and ClamAV detection strongly support the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/123?utm_term=creed+full+movie++in+tamilrockers In PDF document text
    • https://cdn.sqhk.co/suwojixuwebi/jtmkagh/dezipimagotodafe.pdfIn PDF document text
    • http://penafur.scienceontheweb.net/clinical_pharmacy_book_free_download.pdfIn PDF document text
    • http://copyright-rules-help.com/61531151454jssct.pdfIn PDF document text
    • http://pililiriniru.mypressonline.com/81451203649.pdfIn PDF document text
    • http://tactical-jacket-sale.shop/stuart_hall_representation_bookcgagi.pdfIn PDF document text
    • https://cdn.sqhk.co/susojitigi/fTheRgi/alphabet_song_lyrics_rap.pdfIn PDF document text
    • http://guzexesuge.mypressonline.com/mekubu.pdfIn PDF document text
    • http://tedurelaseji.mygamesonline.org/gokaduwegojatafanikesevar.pdfIn PDF document text
    • https://cdn.sqhk.co/sugefixa/dDrhc7C/saudi_aramco_drone_attack_video.pdfIn PDF document text
    • https://cdn.sqhk.co/kanonilabepi/jjrickx/bittersweet_symphony_piano_sheets.pdfIn PDF document text
    • http://nugekurobeju.iblogger.org/tokibodasazuzalen.pdfIn PDF document text
    • http://m-laskin.ru/all_saints_primary_school_peterborough_uniform1ylcn.pdfIn PDF document text
    • http://onlinekartiadesi.com/apple_logo_wallpaper_hd_4k9dc2n.pdfIn PDF document text
    • http://hangzhoumetal.ru/acyl_chloride_esterification_of_alcoholsica1f.pdfIn PDF document text
    • http://zexaribamemavi.sportsontheweb.net/gebidomejemowewipijab.pdfIn PDF document text
    • https://cdn.sqhk.co/ferobisuw/8DLQcij/how_to_write_on_file_windows_10.pdfIn PDF document text
    • http://kasaxeko.mypressonline.com/mizexadafitosox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/008b3f2d-4c6c-448f-bf62-6a0535c03329/skyrim_night_mother_coffin_freeze.pdfIn PDF document text
    • http://vuvuparitika.rf.gd/jefasuvax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69ab7dd5-d2a9-473e-8252-22245df40b29/what_pets_are_permissible_in_islam.pdfIn PDF document text
    • http://ziwivazud.onlinewebshop.net/how_to_change_resmed_airsense_10_filters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc5f9f5b-81a1-4036-b79a-f17ad17beca6/rules_of_attraction_simone_elkeles_summary.pdfIn PDF document text
    • http://nuxumejaxumem.epizy.com/46625862031.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_off0000e958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE958 5196 bytes
SHA-256: 509735008e058b44ba08bf2e9886eeddfdb7427f1bb7f969ca26e09a17f36970
font_01_sfnt_off0000faf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF4 11080 bytes
SHA-256: 31096e460e36402efd797b00d6bed9e17e68d3d146041b1aab27509ee666b6cd