Malicious PDF — malware analysis report

Static analysis result for SHA-256 63ba95506c16c649…

MALICIOUS

PDF

150.9 KB Created: 2021-02-05 18:36:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 639a43677d2b75332ea3baf48cd054f9 SHA-1: 8306361c4a1f416730cf7499d3db994254fae795 SHA-256: 63ba95506c16c6496620ccb5a4de961397c5c6690c8a03ab84601ced7e24b3b6
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It uses a brand-impersonation lure for Apple and instructs the user to enable content, indicating a phishing or malware delivery attempt. The embedded URLs point to potentially malicious or redirecting domains, suggesting the document is designed to lead the user to a malicious payload or credential harvesting page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bimozasobo.weebly.com/uploads/1/3/1/3/131398313/wemewekamokiwepu.pdf.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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/123?utm_term=biblia+cronologica+reina+valera+1960+pdf+gratis PDF link annotation
    • http://mujepojubum.22web.org/6897261985.pdfIn PDF document text
    • https://bimozasobo.weebly.com/uploads/1/3/1/3/131398313/wemewekamokiwepu.pdfIn PDF document text
    • http://tunizunifegitof.66ghz.com/auto_clicker_for_android_games_no_root.pdfIn PDF document text
    • http://wipababotuzuke.iblogger.org/puxutesi.pdfIn PDF document text
    • https://demenuxukuxit.weebly.com/uploads/1/3/1/4/131438289/aafe6914f.pdfIn PDF document text
    • http://kebilosudo.22web.org/gawipetutaf.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/wetowuzuxit/kelowna_downtown_restaurant_guide.pdfIn PDF document text
    • http://jesegusanasukan.epizy.com/pitch_black_movie_in_english.pdfIn PDF document text
    • http://matogojetize.rf.gd/47776941376.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/kuxaguguniratubar.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/kaththi_theme_free.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/behavioral_finance_journal.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001eb02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EB02 6076 bytes
SHA-256: 55b5fb1910017030b76a46c7254fd1f16fb9ff8cbdb803d30afa7d45844e0bfc
font_01_sfnt_off0001ffbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FFBB 1964 bytes
SHA-256: 409ee9a3885541ffdc58d6bd2d6bfd260a46de59e4270c8c7780dd2af6cdbafe
font_02_sfnt_off00020914.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20914 12904 bytes
SHA-256: cdb6822ce7e20a0987d1790e394cefa6b1471aa7a99e103586f2f93a4b04ab24
font_03_sfnt_off000233dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x233DD 17260 bytes
SHA-256: ef2082f841c72c1de497296b11082ad0118bb25499f0273410cba7b27f5ada9e

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