Malicious PDF — malware analysis report

Static analysis result for SHA-256 a73aec1ca46894b7…

MALICIOUS

PDF

78.5 KB Created: 2021-03-12 19:24:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 85f4f00808e8cebb9772aba4c72f20e6 SHA-1: 161342b4746729129fa57850f1f0838a69d22e97 SHA-256: a73aec1ca46894b70134825dcdb024ffe50363ef9b1b4d0daa7bcf4976506c5a
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/aws?utm_term=public+administration+masters+national+university PDF link annotation
    • http://lasleymarkt.ru/witcher_2_netflix_trailersebq3.pdfIn PDF document text
    • https://cdn.sqhk.co/moromasi/5ggihib/brain_out_level_51_answer.pdfIn PDF document text
    • http://pek-24.cc/domino_s_pizza_near_me_phone_numberjh7do.pdfIn PDF document text
    • https://cdn.sqhk.co/temirikuji/iapfHgc/wakaf_al_quran_malaysia_qurantime.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_601ef1fc78cee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501810/normal_6043240e39212.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401691/normal_602fce1ff2dc3.pdfIn PDF document text
    • http://worameruvejaka.mywebcommunity.org/office_365_word_tutorial.pdfIn PDF document text
    • http://mugedly.xyz/chennai_super_kings_team_2020_players_listxp8id.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451350/normal_5fcd5276c4b15.pdfIn PDF document text
    • https://cdn.sqhk.co/sinemajud/eFjcTig/last_day_on_earth_survival_game_loop.pdfIn PDF document text
    • http://suzofovolavuk.scienceontheweb.net/dakajuvideledela.pdfIn PDF document text
    • http://xrootunited.com/domiperexajakur9xrh.pdfIn PDF document text
    • http://fatunatet.getenjoyment.net/bin_sachivalay_syllabus_2020_maru_gujarat.pdfIn PDF document text
    • http://wozekozexufoxol.scienceontheweb.net/what_did_the_3rd_estate_want_in_the_french_revolution.pdfIn PDF document text
    • http://erogan24.website/41195375525i9ll2.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/fizup/7530294737.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/vlookup_from_another_sheet_google.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/international_marketing_irwin_marketing_17th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/tapping_auto_clicker_apk_uptodown.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/vonitanonesesafuwakabeze.pdfIn PDF document text
    • http://makakanow.onlinewebshop.net/how_to_write_a_lease_for_rental_property.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_off0000f6c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C6 5388 bytes
SHA-256: 10ff9ac4a3c973a7d6f3f67be9de81cf8c77bd6d4957b3e639f3128e43fef0a9
font_01_sfnt_off00010907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10907 10340 bytes
SHA-256: a59e7f4aafb6fb280db82fc6fd5319a24f0b510271c5b265d94d810200638dc3

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