Malicious PDF — malware analysis report

Static analysis result for SHA-256 305a72c3dd3abf25…

MALICIOUS

PDF

80.2 KB Created: 2021-03-21 23:41:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3257ade0b8af53005608f5d06042d7ac SHA-1: 98b5b89826b2799ca270b7d2914f56a95df18101 SHA-256: 305a72c3dd3abf259c5a3fd4b25ff3b56b292cc58580780a3858713b6e272ab2
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses brand-impersonation credential phishing. 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://mitesevutij.weebly.com/uploads/1/3/4/7/134717039/9587b7c00a6d.pdf.
  • 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://bologen.ru/wix?keyword=young+goodman+brown+analysis+questions+answer+key PDF link annotation
    • https://mitesevutij.weebly.com/uploads/1/3/4/7/134717039/9587b7c00a6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450731/normal_600e220790401.pdfIn PDF document text
    • http://kuxogajow.iblogger.org/jepiwivo.pdfIn PDF document text
    • http://galoomer.online/599606486951vef5.pdfIn PDF document text
    • https://cdn.sqhk.co/wunasesev/MSk2vig/xufuxixojejetidib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499942/normal_5fcb2fba5ef9b.pdfIn PDF document text
    • http://fastdonwload.space/exercises_stative_verbsaekw1.pdfIn PDF document text
    • https://nonoxatuvel.weebly.com/uploads/1/3/2/6/132681685/kixekon.pdfIn PDF document text
    • https://ladolijid.weebly.com/uploads/1/3/2/8/132816107/556937.pdfIn PDF document text
    • https://cdn.sqhk.co/zumumolebajo/gcz96gg/thiazide_diuretics_loop_of_henle.pdfIn PDF document text
    • http://smirno.life/biwusaxenoxibojixejdcdl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456998/normal_60059058a7b24.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rojotafapexaj.rf.gd/17532863788.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/ernie_ball_vp_jr._passive_volume_pedal.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/40064902396.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/66914429422.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/81781009009.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/lukizovefijipedogoxoboz.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_off0000fae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE0 5632 bytes
SHA-256: e8e8202e980f1ee86abfe4d9719587520e868038946d9c370a8aa1dec83567cf
font_01_sfnt_off00010e04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E04 10856 bytes
SHA-256: 3a3daf80e81e3a32215b9e63f22b96a464e3aa89b60c766122bba9e7a36d9d4e

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