Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d0bbd9a032ca096…

MALICIOUS

PDF

72.4 KB Created: 2021-03-31 08:32:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44a89ddf289e3ba595299d9d8bd6fb68 SHA-1: 71bd42f834a92802f58398d1cdda060024bb266a SHA-256: 2d0bbd9a032ca0960472147a9adf2f78dc66499278b43c97408ff984d6aad6e8
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a website disguised as a search result for educational content. This URL is likely used to deliver a malicious payload or phish for credentials. The ML classifier and ClamAV detection strongly indicate malicious intent, and the PDF structure itself contains an external URI pointing to the suspicious domain.

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://kuzutuzo.ru/wix?keyword=conceptual+physics+chapter+24+magnetism+answers
    • https://cdn.sqhk.co/mukujoripu/iGhlwfr/1655118433.pdf
    • https://cdn.sqhk.co/fepexeguma/hdhc4gf/cars_for_sale_near_me_under_5_000.pdf
    • https://cdn.sqhk.co/rudixika/Blojagh/63232574321.pdf
    • https://cdn.sqhk.co/degavorofala/gjjijib/flight_ticket_app_android.pdf
    • https://tiseparalav.weebly.com/uploads/1/3/4/7/134735838/tutarugisivap.pdf
    • https://tatosemivuzufik.weebly.com/uploads/1/3/4/5/134599987/7769016.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tezude/vabopebagu.pdf
    • https://uploads.strikinglycdn.com/files/7d051c44-f53c-45fc-a194-d6043a1846e7/25974658671.pdf
    • http://pimurif.rf.gd/catch_me_if_you_can_streaming_online_free.pdf
    • https://uploads.strikinglycdn.com/files/ca6dbc2b-2d6d-40b6-bf1b-b814abbf33de/chosen_but_free.pdf
    • https://uploads.strikinglycdn.com/files/bc53ae65-5af1-4149-975f-c4feedc16f5f/the_school_for_good_and_evil_book_6_release_date.pdf
    • https://s3.amazonaws.com/zosevid/kalokufuvifo.pdf
    • http://wifeturarotalov.rf.gd/differential_calculus_by_gorakh_prasad.pdf
    • https://s3.amazonaws.com/lorifawuvawot/haydn_the_heavens_are_telling_sheet_music.pdf
    • https://s3.amazonaws.com/pigolo/mdas_rule_worksheet_grade_5.pdf
    • https://s3.amazonaws.com/kotodur/2882896887.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_off0000ddc3.bin
2082301bca866dd151954a4703fede39f30cfb21225d439b50fdf0850a64ae20
pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC3 5668 bytes
font_01_sfnt_off0000f0f7.bin
1c185702c826acbd3ebdd522c59ea43d5de6a35be0a30be3bebdc5b3e92baefa
pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F7 10340 bytes