Malicious PDF — malware analysis report

Static analysis result for SHA-256 65a9c7ce1d38d508…

MALICIOUS

PDF

77.7 KB Created: 2021-03-12 07:42:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1f572f4db4df0219c9e2da4fe4bec58b SHA-1: 1840861ef3099f2ad8a9ebd2ec566343659be84d SHA-256: 65a9c7ce1d38d508a506d1d99d04fcc5cb1bdc9929499986879e43bb3059a358
96 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 0.9998

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://pelibifir.ru/wix?keyword=physics+chapter+9+test+energy+answers PDF link annotation
    • https://cdn.sqhk.co/porekige/jKHl6So/history_of_islam_books.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423429/normal_5fee646f9a77b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458428/normal_601146917c08e.pdfIn PDF document text
    • https://cdn.sqhk.co/perokokamosa/HgjcIlF/final_fantasy_xvi_ff_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/wavefekus/jbiciis/remejixigadewopesew.pdfIn PDF document text
    • https://cdn.sqhk.co/zavilisuga/ggbtjbD/quizlet_unit_2_world_history_test_review.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/tikoweravisixu/peoplesoft_maintenance_worksheet_tables.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ba15e0f-d1d0-47fd-9ab2-1d54e8c41526/19245082464.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6362bfeb-7e42-4092-81e7-5498b5c5761c/dibujos_de_caras_de_emociones_y_sentimientos.pdfIn PDF document text
    • http://dudasuz.epizy.com/volijirabegoxikujujolanam.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/mobusukunetejexuliwubez.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/bejeweled_blitz_2_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/azhar_mimicry_video.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/troy_bilt_horse_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/73353352002.pdfIn PDF document text
    • http://devawuwu.rf.gd/kaxirisukopigigup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b087eaff-c1a1-4b05-8e03-1044a1f019ce/are_there_words_to_moonlight_sonata.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/bicycle_parts_list.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_off0000f290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF290 5516 bytes
SHA-256: b3080112066054695d1e614f8f91dfe5ee010285e483275596cee09be2ef64df
font_01_sfnt_off00010562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10562 10720 bytes
SHA-256: b0dbad8b874dbed88d658c57e0d0ad43bf362e3804fcf36c53b81858640dea57

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