Malicious PDF — malware analysis report

Static analysis result for SHA-256 249385ec7dbbddb9…

MALICIOUS

PDF

93.5 KB Created: 2021-03-20 21:10:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: cfee41c5b7c0b1521d16564e41e0266a SHA-1: a0ef8f0178d8eeca200cd575e3f4ede96e892ce5 SHA-256: 249385ec7dbbddb9d36eb05180b5a98dc96aee53886fbad0deadfc9dc0686af0
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing or trojan. The 'SE_CALLBACK_LURE' heuristic indicates the document is designed to trick users into calling a phone number, a common tactic in phishing and tech-support scams. While no scripts were extracted, the presence of external URIs suggests a potential download or redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://jottigo.ru/strik?utm_term=songs+with+i+iv+v+iv+chord+progression PDF link annotation
    • http://mxsale.info/skripsi_akuntansi_biaya_produksi5ee35.pdfIn PDF document text
    • http://pusedoropeseb.66ghz.com/jubevaz.pdfIn PDF document text
    • http://kifenefazujiz.iblogger.org/33026627102.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404105/normal_5fde371cefe10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420906/normal_602c7a1a2e76f.pdfIn PDF document text
    • http://dsv-trening.ru/fijolopagonavixozavuligtham.pdfIn PDF document text
    • http://bbcua.site/1008_names_of_lord_vishnu_in_tamiltnikf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0bf7887-9348-4ed9-b1c5-ccebf2b810f8/how_to_change_drive_belt_on_craftsman_lawn_mower.pdfIn PDF document text
    • http://buzawasilugije.epizy.com/febobase.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/total_conquest_unlimited_money_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8149d244-69a6-4c30-bec5-03c0faa8e03a/sony_mdr-zx770bn_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/solidworks_2017_system_requirements.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/who_plays_brenda_in_catch_me_if_you_can.pdfIn PDF document text
    • https://da18e6a8-d720-42de-a88c-3f13daad7efb.filesusr.com/ugd/08fe48_cbf11ded3617465f86b82f99635f3952.pdf?index=trueIn PDF document text
    • http://rotalewisiv.epizy.com/brave_frontier_2_beginner_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/61914784552.pdfIn PDF document text
    • http://fedukuto.epizy.com/tejutamupibizutitu.pdfIn PDF document text
    • https://041f977c-1598-48cb-b578-3d63f550c8ab.filesusr.com/ugd/524ae3_9d80e30d32404fc6a4a7ce295220d8b2.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13023 5348 bytes
SHA-256: 813624ad94e75382ad3b61519c6af75d5edc517a9c5e93ad3602111cbe0ac77c
font_01_sfnt_off0001426c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1426C 11416 bytes
SHA-256: 1857b4ae7d941b95151aaf5216e3fdb9329be2d2bea8f40b978787e5c524fdcf

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