Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4e6f66a01edaf66…

MALICIOUS

PDF

81.5 KB Created: 2021-03-25 03:53:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b81164cb4d6361ef9f45be17d7085e1a SHA-1: 2221b352e3a1db267ee52abf7212e1cf87f33c47 SHA-256: c4e6f66a01edaf66e1c075f9fa5ab488783590b5535709ce8ef014809257ed9e
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 0.9990

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/wix?keyword=human+anatomy+worksheets+for+kindergarten PDF link annotation
    • https://cdn.sqhk.co/melalisopapu/Xj5hdQp/furniture_mod_for_minecraft_pe_1._12._0.pdfIn PDF document text
    • https://cdn.sqhk.co/mikitikotak/Njjjeih/62325777530.pdfIn PDF document text
    • https://cdn.sqhk.co/dojaxeje/ge9hgch/y8_stickman_swing_star.pdfIn PDF document text
    • https://cdn.sqhk.co/zimopaji/Ghg3egj/best_go_kart_rides_in_pigeon_forge.pdfIn PDF document text
    • https://cdn.sqhk.co/miviterul/fPrkjh8/fake_novel_your_own_tsundere_roof.pdfIn PDF document text
    • https://cdn.sqhk.co/woselukafo/fNPiceN/office_boss_meme_generator.pdfIn PDF document text
    • https://cdn.sqhk.co/losokifape/ih3Ojfz/32717055014.pdfIn PDF document text
    • https://cdn.sqhk.co/duporetixi/QYftSig/5443250541.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/7c5705a5-0467-43fb-bc4d-734336f7cc39/pefukonexe.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/eviction_notice_template_michigan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d01e9906-2c4a-4d1c-8f5b-614fbe4d9672/ap_english_sample_essays.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/xadozejigeteboba.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/32925827813.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fad2287-9130-4eb5-9673-de53d5f97d04/50713693140.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/house_party_line_dance_step_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/bioshock_infinite_burial_at_sea_achievement_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef7119e8-9262-4196-ae78-690e73aa8b9a/oster_18_qt_roaster_oven_recipes.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/audit_report_format_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/97542740321.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ad177c5-e2e4-4c09-a90a-a523f9994296/29698852194.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/abnormal_findings_of_blood_chemistry_r79.89.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/129eed85-dbf3-4113-a6b0-584d7d49a6ca/zatatuxafez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e651cae-95f1-4ddc-9d87-71409dff3a48/what_are_the_8_classification_of_organisms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/792ea472-a878-4f32-bd2d-6bb14d8bfa59/zawifupifisogora.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/21056022443.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_off0000f251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF251 5392 bytes
SHA-256: 9f899863b3c4d45e799be5be27f1765ef1513f74381255d6441fba808348d95d
font_01_sfnt_off0001048c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1048C 11156 bytes
SHA-256: ac94192332363021b6c815c06b0911e50f93173750e6b5ee7422d55aa518578e
font_02_sfnt_off00012a1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A1C 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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