Malicious PDF — malware analysis report

Static analysis result for SHA-256 58217a98634891fa…

MALICIOUS

PDF

66.7 KB Created: 2021-04-17 20:16:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 38718cb38e8da9a4aea434d149d6d982 SHA-1: dadec4ead101fe00cc985ee500dbfe817dcea62b SHA-256: 58217a98634891faedc8f8fe158281e513329ffe3b799bd97e7fa9b55b22767f
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://leonvi.ru/strik?utm_term=positive+thinking+definition+pdf PDF link annotation
    • https://cdn.sqhk.co/gafisasiwu/BTjd6lb/woodcrafters_home_products_llc_weslaco_tx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402261/normal_5fd3459554c51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404520/normal_60264c210d9d0.pdfIn PDF document text
    • https://cdn.sqhk.co/jibetovo/ijghHpH/fogudaxesobaf.pdfIn PDF document text
    • http://peguxukeziku.sportsontheweb.net/94786465610.pdfIn PDF document text
    • http://kerutugizuxig.mygamesonline.org/gofenexazipisuvedezaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450240/normal_60688cba88d4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386091/normal_6064e0479c8b3.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/woxotopapozokev/rainforest_bouncer_age.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/solving_systems_of_linear_equations_algebraically_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4360a504-ca20-40e9-8356-d857c5ff7f1c/currency_trading_for_dummies_latest_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/365e8577-7cba-4bc1-a6e0-9f471db69c50/vebanazimuzoveso.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/kenmore_elite_french_door_refrigerator_not_cooling.pdfIn PDF document text
    • https://s3.amazonaws.com/dogevazapiwediw/vojazokeviguxezokofidatud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4a662fe-7ef2-4423-9552-812e158c36c6/understanding_media_the_extensions_of_man_apa_citation.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/56648840845.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa9e4641-9fb0-4445-a9c2-61148a7558e6/wazawa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/402b6a76-ceba-400f-b28f-13ded661d7fe/onkyo_tx-nr636_receiver_shuts_off_immediately.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_off0000c93b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC93B 5092 bytes
SHA-256: 0430c7549f60b27e54817062b11edf6f214e7e37e610bccaea0f2a10df4d1ba8
font_01_sfnt_off0000daa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA1 9824 bytes
SHA-256: e02a7a01822f9c36463c8f83619c51a6857cc97b5cdb58a19f717544390f1130

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