Malicious PDF — malware analysis report

Static analysis result for SHA-256 b683afc8ccb2d6c0…

MALICIOUS

PDF

1.03 MB Created: 2021-03-31 08:43:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0fd2704d5603866cd859d59b010299f3 SHA-1: 71c84a8226fb8f0f9f2f814eb6c2f06b369070a1 SHA-256: b683afc8ccb2d6c0e295fbf32eceae4c15fab11b1bb3254aad6bffcedc889771
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ClamAV with a signature indicating phishing and trojan activity. It contains an embedded URI pointing to 'resalured.ru', which is a known malicious domain used for phishing. The document body, though heavily obfuscated, suggests a lure related to a budget planner, aligning with common phishing tactics. The presence of multiple unknown URLs further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0564

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/123?utm_term=asic+budget+planner+pdf PDF link annotation
    • http://kawlites.online/ninja_air_fryer_walmart_canada8y504.pdfIn PDF document text
    • http://kpupnov.pro/troy_bilt_5550_generator_carburetor_partsd3grn.pdfIn PDF document text
    • http://titanovyi-filtr.ru/advanced_excel_course_fees_in_kolkataqag46.pdfIn PDF document text
    • https://cdn.sqhk.co/woteruzid/73sjGib/97726771169.pdfIn PDF document text
    • http://construt.site/best_assault_mechs_battletechzxr47.pdfIn PDF document text
    • http://lnstagram-helps-contact.com/corel_draw_x6_keygen_xforcenw2yh.pdfIn PDF document text
    • https://cdn.sqhk.co/buwuvibija/ghjdicU/fiberglass_sheets_for_boat_building.pdfIn PDF document text
    • http://d-youtube.com/861143916376rafl.pdfIn PDF document text
    • http://cafechorsu.ru/old_testament_books_of_the_bible_song_catholica14gb.pdfIn PDF document text
    • http://raifaisentgo.online/amplificador_de_potencia_tipo_deu4j2.pdfIn PDF document text
    • https://cdn.sqhk.co/vadetegubufo/TBjeFE4/custom_carolina_skiff_boat_cover.pdfIn PDF document text
    • http://cesaregaspari.com/hocus_pocus_book_popsocket92611.pdfIn PDF document text
    • http://birodavaz.22web.org/divowidozodepofimeraraxa.pdfIn PDF document text
    • https://cdn.sqhk.co/jabuvilir/bh7UhiE/wajekimuxutu.pdfIn PDF document text
    • https://cdn.sqhk.co/xenudipu/davSgge/tisevuzekoxilima.pdfIn PDF document text
    • http://circulshtangcalip.website/58969603130x8692.pdfIn PDF document text
    • http://sigasebilo.iblogger.org/learn_russian_books_free.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
    • https://uploads.strikinglycdn.com/files/d79b2813-8844-494f-90c8-c0df563f9e50/the_secret_law_of_attraction_movie_review.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/standard_of_excellence_book_1_trumpet_jingle_bells.pdfIn PDF document text
    • http://tupopozavagaf.rf.gd/babbu_maan_new_video_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e345cde-5f13-4497-9bfc-16a2edfd0fa8/the_koran_or_quran.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cc5bbf0-7b18-47d9-af01-21a5b0bad652/45193843090.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d4d05c1-db46-42f8-b7d4-682ce7d58cec/ib_math_courses_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/87432962129.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/good_free_guided_meditation_apps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39f68633-c6f3-4902-a39a-ed378a4f3b30/70087099261.pdfIn PDF document text
    • http://golemibafub.epizy.com/what_is_general_to_specific.pdfIn PDF document text
    • http://mikipifovusi.epizy.com/43793241906.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_off00102e1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E1C 5224 bytes
SHA-256: 67d89faf9de4c631a615fd39d471f4f7d63c543bcdcc479d6592275ec7c448d4
font_01_sfnt_off00103fe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103FE1 9900 bytes
SHA-256: e63d0f2a56ac6ba38deeefa4a59c53b82f291c25bfe199eb21568ec6ed7a5ef4
font_02_sfnt_off0010618d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10618D 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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