Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7ead8a57596458d…

MALICIOUS

PDF

79.2 KB Created: 2021-03-29 10:21:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: cc1d4488946e05bb7be09d473ca1baa9 SHA-1: d85f01a3ee7ea1c991ff85fbb658e74c58a500a0 SHA-256: c7ead8a57596458d4882bbaee9a751365b905b47cb09a8a170ae8276c5a6ad64
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 0.9995

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://mezovuduw.ru/123?utm_term=friendly+letter+writing+template PDF link annotation
    • https://cdn.sqhk.co/geroterunetu/gcXpia3/86688375925.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368964/normal_6035e12d5591c.pdfIn PDF document text
    • http://getyourcredit.info/navy_seal_training_texasy9xr5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481825/normal_5ff1777491e79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413375/normal_60278d98cd800.pdfIn PDF document text
    • https://cdn.sqhk.co/zogugumo/bjhorUM/download_game_fruit_ninja_mod_apk_android_1.pdfIn PDF document text
    • https://cdn.sqhk.co/masezupusi/CLfhgje/honeywell_t4_wired_programmable_thermostat_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/gobisofokox/fZ8gfKa/classic_arcade_games_for_tv.pdfIn PDF document text
    • http://help-igcopyright.xyz/tabla_de_densidad_y_peso_especifico_de_solidos_liquidos_y_gasesmyw45.pdfIn PDF document text
    • http://ubzvp.com/loote_she_s_all_yours_songegahq.pdfIn PDF document text
    • http://chambrely.xyz/mupujosuvadugowipac5jfk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426814/normal_6041cc58dfb9c.pdfIn PDF document text
    • https://cdn.sqhk.co/tedubifo/c0Pzgia/nuvozedeluka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486563/normal_60524aee4a928.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://s3.amazonaws.com/tonemakopinibem/newspaper_article_template_word_2010.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/52864846730.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/photoshop_magazine_template_psd.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/32774504679.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/41603436862.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/66650379220.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/97212630757.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/trig_identities_review_worksheet.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_off0000ec27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC27 4928 bytes
SHA-256: ed492543eb24f2a9d12422237358a1f86c47f2dbb10c09520a016ee3fdd9b7f8
font_01_sfnt_off0000fcde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCDE 10680 bytes
SHA-256: 9015290808be9b286e4f9d5571678438bd3bae7f6762f12b142183b5ee6e5c15
font_02_sfnt_off00012161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12161 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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