Malicious PDF — malware analysis report

Static analysis result for SHA-256 42e8254fe779e4ee…

MALICIOUS

PDF

79.6 KB Created: 2021-03-07 07:00:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4bd53371265059b95bdbcce7e3282295 SHA-1: b7dd19fdfff9f774054bb77673cbb23159504c95 SHA-256: 42e8254fe779e4eead5237a0f6ed68501530cb0ba85ff30f1e36792105c6ea1f
96 Risk Score

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 0.9993

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://zajinet.ru/123?utm_term=the+shape+of+things+to+come+phrase+meaning PDF link annotation
    • http://wovobogawukepu.iblogger.org/zadalizaxanabin.pdfIn PDF document text
    • http://vagoneviwesum.66ghz.com/business_english_placement_test_with_answers.pdfIn PDF document text
    • http://salonlabs.xyz/gejapoluzijejorubasl8jk.pdfIn PDF document text
    • http://tometifo.getenjoyment.net/mokazunelaloxinutodo.pdfIn PDF document text
    • http://sebekeruxa.iblogger.org/tewuzodolejib.pdfIn PDF document text
    • http://detonic-italia.website/9975346891568nzg.pdfIn PDF document text
    • http://infonewsuk.site/digi_postpaid_payment_methodxk6ya.pdfIn PDF document text
    • http://falorilipeb.mywebcommunity.org/46457886207.pdfIn PDF document text
    • http://zinabexodepo.iblogger.org/virtuous_pope_violin_sheet_music.pdfIn PDF document text
    • http://niwizonoleror.mywebcommunity.org/how_to_get_an_autopsy_report_online.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/widuxade/32693263564.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/formule_brute_definition_simple.pdfIn PDF document text
    • https://4a1cfc67-5981-466d-a13b-75576fe7431f.filesusr.com/ugd/64e449_b0f11912928348658cf1a0ed5a50326a.pdf?index=trueIn PDF document text
    • https://1ebfeea1-7d02-43b8-8f0a-002c87bc7f75.filesusr.com/ugd/50dcf6_b6682d0a3b864520936fc1c5e1096a84.pdf?index=trueIn PDF document text
    • http://bakesuli.epizy.com/bandura_1977_social_learning_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/nanejupifu.pdfIn PDF document text
    • http://bufijonewufo.onlinewebshop.net/how_to_recover_from_abandonment_trauma.pdfIn PDF document text
    • https://f9c81679-ddb1-4746-ab40-32673edc426c.filesusr.com/ugd/2eff39_040d863c471048d3ad5823c19f08525a.pdf?index=trueIn PDF document text
    • https://dc688580-c0ec-4ade-910b-7abffd870ab4.filesusr.com/ugd/096b61_64247cd8aa0f430f95bf5e5101af3f3e.pdf?index=trueIn PDF document text
    • http://xujided.onlinewebshop.net/88202439595.pdfIn PDF document text
    • http://gafodix.myartsonline.com/15602791416.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/template_for_christmas_invitation_ms_word.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/apothecary_system_conversion_worksheets.pdfIn PDF document text
    • http://makakanow.onlinewebshop.net/audio-technica_at-lp60xusb_edifier_r1280db_turntable_package.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_off0000fa72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA72 5344 bytes
SHA-256: 91ab49fbb63d8888251913bd7058f82d8dc9dedf406e53a2e847cc89c39baa2e
font_01_sfnt_off00010c7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C7C 10708 bytes
SHA-256: cd1dca8a46ee8118040e7addcbcadf96438388afb08867b1191eebb48231fefb

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