Malicious PDF — malware analysis report

Static analysis result for SHA-256 f49d222d1bf5a87e…

MALICIOUS

PDF

76.8 KB Created: 2021-05-20 20:15:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 246e3a2bd6105d552148dfe67ab43f98 SHA-1: 5147cb9033cc27b7533869f8d77071ebbec22f09 SHA-256: f49d222d1bf5a87e43ea1599a4f4049dc5e220c96e4d26d1052a6c0e5a89a6dc
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or social engineering attempt to trick users into visiting a malicious website. The document body, though heavily obfuscated, suggests a lure related to cover letter templates.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://maypoin.ru/strik?utm_term=cover+letter+template+word+for+resume PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410414/normal_5fe74e4929ee0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379362/normal_5fd68bffed2c1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zurovajij/georgia_armenia_azerbaijan_lonely_planet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/905d43cc-4202-498a-ba58-70cbe7e7133c/how_to_change_time_and_date_on_timex_ironman_watch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee666a5b-411b-4a54-9228-13f799ac1795/of_mice_and_men_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fa33c68-f062-4982-9bea-b836cd6de1d9/where_is_atp_stored.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82a411c6-d389-4023-9dd3-50bb29b2dca4/60324933000.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/ohio_statutory_durable_power_of_attorney_form.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/kopamegukof.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/birthday_photos_free.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/this_blessed_house_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/wordscapes_uncrossed_answers_daily.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/27383243447.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc14bd8c-010c-4b0e-b5b0-4a2f9f83b97c/dark_season_2_release_date_netflix.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/boat_license_alberta_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd2aca56-3423-4d98-8e68-61ef4e44cbfb/curso_de_ingles_basico.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/do_stairlifts_have_batteries.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/lejuxavotazefisefowu.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/38098980367.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/19056042246.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab9b30f5-5226-4d55-8e01-2a2de36b7c9e/49658302680.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9219ce8-a9aa-428a-a5e3-c380917d3879/dell_u2711_resolution_problem.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/louise_hay_guided_meditation_self_love.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/linnworks_ebay_listing_template.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_off0000f214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF214 5244 bytes
SHA-256: ebbb2ed33c6c41a559f3d868f74e528e638713743a711c65efdbe007e88dccff
font_01_sfnt_off000103e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E4 9884 bytes
SHA-256: d763426139d31670ddf10281293c125263a3157c0d61585b86e9dfbefc72b30f

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