Malicious PDF — malware analysis report

Static analysis result for SHA-256 714d6ece8519f9ff…

MALICIOUS

PDF

75.6 KB Created: 2021-03-15 06:05:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66ff20185efb50456366ad739e688540 SHA-1: 538d69514b8d136e607913e6723015ebe0ef3d36 SHA-256: 714d6ece8519f9ff070636705a5f8052ba4c1a73c44fa51690b362f05f871e5b
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL disguised as a meeting attendance sheet. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of an external URI suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/award?keyword=meeting+attendance+sheet+pdf
    • https://cdn-cms.f-static.net/uploads/4380082/normal_603a92935406d.pdf
    • https://cdn-cms.f-static.net/uploads/4380403/normal_5fe9f0d370618.pdf
    • https://cdn-cms.f-static.net/uploads/4413363/normal_5fd8762211426.pdf
    • https://cdn-cms.f-static.net/uploads/4458625/normal_602808a2963a5.pdf
    • https://cdn-cms.f-static.net/uploads/4403271/normal_6028e74294a53.pdf
    • https://static.s123-cdn-static.com/uploads/4477921/normal_6007bbb624461.pdf
    • https://cdn-cms.f-static.net/uploads/4428062/normal_5fe728817e9c7.pdf
    • https://cdn-cms.f-static.net/uploads/4450260/normal_6014ac3a43592.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zotubune.myartsonline.com/arduino_uno_r3_spec.pdf
    • https://s3.amazonaws.com/wibedubosateg/hearthstone_frozen_throne_budget_guide.pdf
    • https://s3.amazonaws.com/gavapozalilup/kojeputoxuduzujiz.pdf
    • https://uploads.strikinglycdn.com/files/1d07460a-1923-408e-b549-d1a124bfa6f6/red_wine_for_beginners_philippines.pdf
    • https://s3.amazonaws.com/tojabixefova/japudazilobot.pdf
    • https://s3.amazonaws.com/widofafane/groom_speech_structure_template.pdf
    • https://s3.amazonaws.com/votubukaxogilix/3575784062.pdf
    • https://uploads.strikinglycdn.com/files/927b6dcd-ae6f-4c2a-b513-6525541da970/why_dont_my_desktop_shortcuts_work_anymore.pdf
    • https://s3.amazonaws.com/xulepiwa/social_media_marketing_books_2019.pdf
    • https://s3.amazonaws.com/tonisefoteka/16672822080.pdf
    • http://xizokenimufewom.atwebpages.com/rain_bird_5000_mpr_nozzle_chart.pdf
    • https://s3.amazonaws.com/bupesejirijejus/fawamesoka.pdf
    • https://s3.amazonaws.com/gateme/batch_google_drive_files.pdf
    • https://s3.amazonaws.com/juvuraguvutoxif/bakusivufiw.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebf0.bin
8766b13319ba79b4b7bc032511a0a4e63d0b251fcd8f7560352e452dab026f6e
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF0 5296 bytes
font_01_sfnt_off0000fe0a.bin
92e55ab8cd8925e0c708370b5283b4754e064bf34e23bca36cb3b42639371bf1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE0A 9872 bytes