Malicious PDF — malware analysis report

Static analysis result for SHA-256 c723809e391fb490…

MALICIOUS

PDF

73.6 KB Created: 2021-03-20 15:37:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: acaf367a4b40de1b6f03bbd564200833 SHA-1: 58bf18e6e8cc1f3c4042cea2d113006066746a8f SHA-256: c723809e391fb4905d0010dbdd7dfb5e50b3fb9e4e963dd8057bae0c35ca75b9
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://zajinet.ru/award?keyword=comparison+between+administration+and+management+pdf PDF link annotation
    • https://cdn.sqhk.co/kuwusemob/qCyRcJP/fdic_call_report_glossary.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369191/normal_603affeb2902b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413011/normal_5fd0d61a10ee4.pdfIn PDF document text
    • https://cdn.sqhk.co/pifajaloro/byih8jf/9th_class_maths_book_solutions_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zuronenom/dcr2jdm/rpg_for_destiny_mod_apk_games.pdfIn PDF document text
    • https://cdn.sqhk.co/tatogevi/ESCUUjg/xirosovumesupej.pdfIn PDF document text
    • https://cdn.sqhk.co/fagiseregu/gghgb5b/76606675774.pdfIn PDF document text
    • https://cdn.sqhk.co/detaludolef/jjjJhrk/noxelubotekim.pdfIn PDF document text
    • http://raxajifiwovoj.iblogger.org/zipezagu.pdfIn PDF document text
    • http://bopokijik.iblogger.org/mass_spectrometry_principle_and_application.pdfIn PDF document text
    • https://cdn.sqhk.co/fojevimexu/ihjcu73/2328273449.pdfIn PDF document text
    • https://cdn.sqhk.co/sewujuzanas/hdhjghj/cartoon_snoring_sound_effect_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xivovido/jiH9ib0/vejapafevaju.pdfIn PDF document text
    • https://cdn.sqhk.co/soletibedix/bB43igK/gotabixisajawev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/035d0e75-c331-4007-86db-9cdddecdd9b6/darkest_days_stabbing_westward_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af1bd70c-1fec-471b-beaf-16f432258056/how_to_download_sims_3_late_night_expansion_pack_for_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7cdd16b-3468-4af8-9af6-d294f89d044c/novizepuderofokogoguvupen.pdfIn PDF document text
    • http://nasakitubaribud.rf.gd/tivajovedezuvijezefo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C3 5372 bytes
SHA-256: 651b99192302afcea76ad4c06515653d7295475ae884df2fbfeae5ceeede6bc9
font_01_sfnt_off0000e4f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F7 11164 bytes
SHA-256: 380e72bdb62db99c0f201f7277dd82c68d59e00a2c0405ba3656f7dd685b4172
font_02_sfnt_off00010ad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD7 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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