Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0626a316c87a3dc…

MALICIOUS

PDF

76.9 KB Created: 2021-03-16 22:40:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 23ef36a9ac4f7d474e029c20d86fdd5e SHA-1: 3a045ae9b062ccc820a51c614e9dd08430ec7ec1 SHA-256: a0626a316c87a3dc9a5b58c481e4a8e9050588f70373048f5d96a14eece327f2
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 0.9997

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://jacksth.ru/award?keyword=cesare+pavese+cuentos+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378164/normal_6035e02395ccc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368481/normal_603c471490b30.pdfIn PDF document text
    • https://cdn.sqhk.co/zetanitanedo/ervIhhm/vafudomupakowejut.pdfIn PDF document text
    • https://cdn.sqhk.co/zifakepavax/jdzLOid/talking_lion_toy_good_wife.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414335/normal_603de32270afb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410201/normal_603132fbf41e3.pdfIn PDF document text
    • https://cdn.sqhk.co/kubepugemaki/gJghign/81216778531.pdfIn PDF document text
    • https://cdn.sqhk.co/govamopega/jhaOMHe/superheroes_battleground_mod_apk_android_1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451027/normal_6015315ed56c2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472486/normal_5fdf5e51e07f4.pdfIn PDF document text
    • https://cdn.sqhk.co/badexejos/h8ic6jj/courier_services_near_me_surat.pdfIn PDF document text
    • https://cdn.sqhk.co/zezinojox/ja1cwYg/warzone_2020_reveal.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzuvazol/gtlaImf/domino_s_menu_delivery_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/nujekezitifi/cqihids/beronowusol.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/loxopudizus/writers_choice_grammar_practice_workbook_grade_8_unit_8_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61d2bcc7-f6a0-4b44-b525-f6b7bb01745e/87846386662.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6942f01-21a9-42a5-911f-ff6e337f8537/cissp_study_guide_third_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/25257930775.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6caf2e81-eca8-4c1b-9f3a-8316569731ba/grade_or_standard_of_excellence_crossword_clue.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/couper_un_en_2_mac.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC60 5080 bytes
SHA-256: 901f31af6fc2dc9fa7a8cd682367d461a247a7d4f2bb6a94112941221c1b734d
font_01_sfnt_off0000fdba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDBA 12068 bytes
SHA-256: 266f16c8e4ceaf7442bf9a98e2fc76ff3e62f393ff7e7728e5899d1958c2d8ea

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