Malicious PDF — malware analysis report

Static analysis result for SHA-256 be42460f7495ecbe…

MALICIOUS

PDF

72.8 KB Created: 2021-03-29 09:49:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 44bc2ab7eae90a5d9ea872b6ed4a52ee SHA-1: 51a65c85b0f47fc405b001b15eff65918cb5f2bb SHA-256: be42460f7495ecbe95caf594e070a13cdb9c1173025519611cfdfdcee00cce1a
136 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://jumiwimov.ru/award?keyword=syntactic+categories+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4490974/normal_6008acf164bb9.pdfIn PDF document text
    • http://vamefegali.mywebcommunity.org/pefaput.pdfIn PDF document text
    • http://pubguckazan.com/how_long_are_all_the_hobbit_and_lord_of_the_rings_moviesmus53.pdfIn PDF document text
    • http://securitycheckingbrowservkcom.xyz/78541491879ram83.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379612/normal_5ff281f59f7bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375207/normal_601e594a0f40a.pdfIn PDF document text
    • http://phtech.site/sorcerer_class_5eig7c2.pdfIn PDF document text
    • http://counterman.ru/sat_math_sectionw2sjb.pdfIn PDF document text
    • http://itactical.xyz/939103777149jay9.pdfIn PDF document text
    • http://lowabunuzoxa.getenjoyment.net/az_cardinals_2020_schedule.pdfIn PDF document text
    • http://patajafurep.mywebcommunity.org/weider_ultimate_body_works_exercises_chart.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471971/normal_600bd4f00dc01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366959/normal_6032b087dd107.pdfIn PDF document text
    • http://hookup682.site/how_do_you_tell_if_marbles_are_valuablegqksc.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/takebemanijewok/malotelizim.pdfIn PDF document text
    • http://posikin.myartsonline.com/libro_de_geometria_analitica_bachillerato_contestado.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/how_to_turn_on_jam_hang_up_speaker.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/word_format_meaning_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/rojaduf.pdfIn PDF document text
    • http://nakeviw.myartsonline.com/82144406476.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/cloudformation_assume_multiple_roles.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_off0000df05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF05 5496 bytes
SHA-256: 7b4a5702ea1f0c38269d3f88da0593a3491410c03926f5e1d5f67dab55c07ac8
font_01_sfnt_off0000f1d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D1 10900 bytes
SHA-256: 77a8a7793d8d59c0930fec19931e761e26dc5af64777e21f570798f1c841c7f5

Open this report in the interactive analyzer, or submit your own file for analysis.