Malicious PDF — malware analysis report

Static analysis result for SHA-256 e86c17d2a56eb3ce…

MALICIOUS

PDF

78.0 KB Created: 2021-03-15 19:11:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0543c017e06e72f55527a028402b0501 SHA-1: 7cb037585698f2366a22823c97e3c9f8ddd83d60 SHA-256: e86c17d2a56eb3cecd5ec2bc1b2edb8f2dadda79ae7a243d4647fe29c64674ff
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains and are flagged as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains a URL that appears to be a search query for movie songs, suggesting a lure to entice users to click on malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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/123?utm_term=anjali+movie+songs+free++telugu PDF link annotation
    • http://babblescoop.store/52716930150fy6f5.pdfIn PDF document text
    • http://itfamily.info/95267455250k1wcu.pdfIn PDF document text
    • http://kernig.pro/40150017058tt28y.pdfIn PDF document text
    • http://mufutekuson.getenjoyment.net/jogusokatiwowimerewidekox.pdfIn PDF document text
    • http://reduslim-buy.site/gracias_en_lengua_mayaz5r2z.pdfIn PDF document text
    • http://gaydating.world/41020911929l8dzi.pdfIn PDF document text
    • http://xploitcrew.io/large_printable_world_map0ta6l.pdfIn PDF document text
    • http://gamukanemafutu.mywebcommunity.org/88155194763.pdfIn PDF document text
    • http://jirafka.space/pisimoinhal.pdfIn PDF document text
    • https://cdn.sqhk.co/fuxuduxexi/gd0c56o/desuturaris.pdfIn PDF document text
    • https://cdn.sqhk.co/vasozaponem/14ohfja/my_little_princess_movie_plot.pdfIn PDF document text
    • http://asia.kiwi/super_shot_basketball_arcade_partsrflqb.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://pusebirenox.myartsonline.com/the_brief_bedford_reader_10th_edition.pdfIn PDF document text
    • http://melotaroluna.epizy.com/grammar_games_and_activities.pdfIn PDF document text
    • http://siropesupozit.rf.gd/company_of_heroes_2_master_collection_cheats.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/774e3296-3378-4d31-9cac-6a23d5c021cf/bulova_westminster_chime_mantel_clock_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a5ff699-25bc-429e-b57c-53899007fd2c/bell_jar_book_club_questions.pdfIn PDF document text
    • http://nixozokusujuku.epizy.com/quenching_heat_treatment.pdfIn PDF document text
    • http://nanixalo.rf.gd/100_names_of_allah_in_arabic.pdfIn PDF document text
    • http://rokutore.rf.gd/how_to_login_facebook_in_pc.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_off0000e5c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C5 5096 bytes
SHA-256: 2b91b911b70ebdca98da9b447204c0d7f77bbf140919d19443ad7fae43271809
font_01_sfnt_off0000f70c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF70C 10988 bytes
SHA-256: 63705f86dfef22bddd2cbfe4c11d1884da9a2218691856a1d8c5f76a5b83de7a
font_02_sfnt_off00011c97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C97 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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