Malicious PDF — malware analysis report

Static analysis result for SHA-256 826562c35e072636…

MALICIOUS

PDF

75.5 KB Created: 2021-03-17 10:53:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 4c30b1726cec300cc1f46e9a940acf0d SHA-1: ade2837652905daf2ddf43dc3feab01925de2d3b SHA-256: 826562c35e072636d439d6dfedeaca8a0fe182d17613d0c23a7e97e3a1ce0175
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to host a phishing page or malware. The document body, though heavily obfuscated, appears to be a lure related to a school principal search, suggesting a social engineering tactic to drive users to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dugedepap.ru/wix?keyword=corning+painted+post+high+school+principal PDF link annotation
    • http://instapodarok.site/beatrice_warde_crystal_gobletx35q7.pdfIn PDF document text
    • http://beremoter.online/blue_book_value_of_a_car_in_canadaq2rli.pdfIn PDF document text
    • http://myirn.icu/doduwodesonugovodaggpip8.pdfIn PDF document text
    • https://cdn.sqhk.co/nunamarajop/9jidFhb/pedometer_step_counter_premium_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/verexoleki/6SFUXhd/wallpaper_for_samsung_s10_plus.pdfIn PDF document text
    • http://stroy-level.ru/supelomuwoloseseselexi6twh.pdfIn PDF document text
    • http://big-ita.space/mcdougal_littell_algebra_1_textbook_online_freembrld.pdfIn PDF document text
    • http://shopsupergood.site/588688542512t4kq.pdfIn PDF document text
    • http://copyrightviolationcenters.com/elements_of_sculpture2r6t3.pdfIn PDF document text
    • http://axecheat6.xyz/suer_toss_the_turtlexq14w.pdfIn PDF document text
    • http://olx-delivery.cc/lightning_fighter_2_cheat_apku7j2d.pdfIn PDF document text
    • http://tonagruz.ru/mcse_certification_syllabus_2016k5f3h.pdfIn PDF document text
    • http://50offit.pro/debtors_clerk_job_description_templatew9sii.pdfIn PDF document text
    • https://cdn.sqhk.co/gapebeve/Lggjh6M/judakojelad.pdfIn PDF document text
    • http://dfds.in/allyn_and_bacon_guide_to_writing_8th_edition_online_freey7m00.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/lijulijowivaze/danafiserumamu.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/xovovegigutab.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/answer_the_following_questions_science.pdfIn PDF document text
    • http://foxinojale.epizy.com/42122024301.pdfIn PDF document text
    • http://vutupaxuvidebif.rf.gd/what_are_good_feeling_words.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/10734228810.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/video_editor_android_pro_apk.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_off0000eb70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB70 5240 bytes
SHA-256: 04a4ecf88b2c00241ac881016cee71eb7ee292a7557377da3867d00ed28447cb
font_01_sfnt_off0000fd39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD39 10448 bytes
SHA-256: 996c4f1acaf25d3a8ccc922ee976a24b87b283e681de3b83a1eb0703522071bf

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