Malicious PDF — malware analysis report

Static analysis result for SHA-256 66dc0d40e8b16912…

MALICIOUS

PDF

137.1 KB Created: 2021-03-14 07:23:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6577fd66018080b03931c08047c12d9b SHA-1: 17551f14de570bb5e5759ee0de0a5c129f89b2e5 SHA-256: 66dc0d40e8b16912ef0fce628003d6d46cf754ceb3c66844615cae10f3945b0d
104 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. It uses an urgency-based lure. 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://dugedepap.ru/123?utm_term=best+bicycle+app+for+android PDF link annotation
    • https://cdn.sqhk.co/zojixemem/jbR37hi/36291566607.pdfIn PDF document text
    • http://espaceabone.com/samsung_a105f_combination_fileue8ts.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_6021bf0a77448.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451376/normal_6023b96e963e7.pdfIn PDF document text
    • http://micrometer25bill.site/71329975238we6nc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454965/normal_5fd3143caa5b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369160/normal_6027d97084712.pdfIn PDF document text
    • https://cdn.sqhk.co/tovozovuzedu/4ziglHz/11132584575.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414847/normal_6037cfd23b2fc.pdfIn PDF document text
    • http://bridgecommerce.com/fronius_eco_27._0-_3-_s_datasheetpp1t3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489609/normal_603f1a476df83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479905/normal_60462bfed1313.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475564/normal_602a200e734a2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459631/normal_5feecba4b8f10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379471/normal_5fee09aa89c05.pdfIn PDF document text
    • https://cdn.sqhk.co/jaselavujuwi/hhiidji/12364026615.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/2177229a-64df-4bff-9dbc-747397935999/html5_textarea_value.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fc74873-3762-45a2-8456-3b28bc76b1fb/miranda_cosgrove_moon_meme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86fe2a9a-d799-47f8-9df4-386bd0bbf6e0/94939121561.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_off0001d0fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D0FB 5228 bytes
SHA-256: 94c39a936d8556f30af9e880f5945e4d7fe33f9761c2cf63b259777d27ddc1c2
font_01_sfnt_off0001e2cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E2CB 11340 bytes
SHA-256: ede2536f758e37ff7ff23101b5fb35d5b58e463138ace52bbeb57928bf1c5006
font_02_sfnt_off000208d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x208D1 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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