Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b70a47fa2afe80b…

MALICIOUS

PDF

80.1 KB Created: 2021-02-20 16:45:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5c8d7bd838248f94b581e5953cbf0dea SHA-1: 996e1744db9e6cfe542468cc046efe515ac97a00 SHA-256: 8b70a47fa2afe80b33117042a1ec39cd78cc8de8736dc7c31aa89856af056f39
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://druttle.ru/123?utm_term=how+to+service+a+kenmore+water+softener PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4487647/normal_5fe9032ed977d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420438/normal_5fe462464f808.pdfIn PDF document text
    • https://cdn.sqhk.co/wemitupu/jdgdChS/intro_to_business_process_management_ppt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471085/normal_5fda1a0ba310b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393644/normal_60129509d0e09.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426974/normal_5fee3f1a172d7.pdfIn PDF document text
    • https://cdn.sqhk.co/jedelamodafa/LHJhaZS/reversible_belt_strap.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/zemigiduwagafu/what_is_biological_weathering.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/employee_withholding_allowance_certificate_worksheet_b.pdfIn PDF document text
    • http://tesoxukezeziles.epizy.com/hotel_sales_manager_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/apsrtc_online_form.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/zofetatexo.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/dasuxoparawux.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/45237673999.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/tupivanofiwiwonon.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/84645734190.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/fosipubusope.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/pumazotenut.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/disulfide_bond_formation_assay.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/appositive_commas_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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF6D 4960 bytes
SHA-256: 404e596a417e30c4d1f83d3804ce2cd24363c29b4e4e375295ecaf04cb021d69
font_01_sfnt_off00010045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10045 10588 bytes
SHA-256: 422409ce19081e90470b7df9e46e96fbf66471113617042ea42e542898559638
font_02_sfnt_off00012494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12494 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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