Malicious PDF — malware analysis report

Static analysis result for SHA-256 37e3c128f54e8470…

MALICIOUS

PDF

135.9 KB Created: 2021-03-29 15:41:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d55e9aec47411d5366ef41755b9dd786 SHA-1: 92c5b535758b53bc05c74ef46620fc49dde82c3a SHA-256: 37e3c128f54e8470118d62f77152b3bd7246aa896e0b31786544f10c6255a27a
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 0.9996

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://lozipotod.ru/wix?keyword=economics+chapter+3+study+guide+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4488570/normal_5fc8566804b9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366956/normal_5fe6b986c1209.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453532/normal_6009dc89cf370.pdfIn PDF document text
    • http://fitokaps.xyz/highest_usmle_step_1_score_2019g86k6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417214/normal_60335b72695af.pdfIn PDF document text
    • http://ylyn.ru/830485879913n105.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407571/normal_604732e9ec443.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368951/normal_601dcbdd5d89b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417329/normal_6056e2aaa5deb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476751/normal_60478a8471563.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/muwomapotumugi/gituxigad.pdfIn PDF document text
    • http://pesovadilogikem.rf.gd/cours_capteur_de_vitesse.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/argumentative_essay_worksheets_for_high_school.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/59661319574.pdfIn PDF document text
    • http://vopisatewegom.rf.gd/12874527374.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/94658357625.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/guidestar_nonprofit_jobs.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/expenses_sheet_format_in_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/sex_board_games_companies.pdfIn PDF document text
    • http://nakedavip.epizy.com/tesis_autoestima_en_adolescentes.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_off0001d69d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D69D 5772 bytes
SHA-256: c70275f52613de41ae747f536c3cb440e334c6943e2c7712f033e37fc35325c3
font_01_sfnt_off0001ea32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EA32 12356 bytes
SHA-256: 9faa61737bf622ef756cefbf5618d155b7ff53cbf8a488b324920e64b6682ff9

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