Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcf7723440bed53a…

MALICIOUS

PDF

76.3 KB Created: 2021-02-13 22:48:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 6c4b546e2c57366655d9e003ae62d5d3 SHA-1: b984637f71bec2dc18c010c461d0b33333bf7ec7 SHA-256: bcf7723440bed53ae3856de5f451b64f6a2f71ade7e0ae11b64470114e3a9c2c
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to a URL that is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'Advent bible study 2019 pdf', indicating a social engineering attempt to trick the user into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wix?keyword=advent+bible+study+2019+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4388424/normal_5ff85bffe6c8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374374/normal_600e6c5b87616.pdfIn PDF document text
    • http://storefromit.pro/airplane_movie_jive_memex4gvt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462073/normal_602654d2f195a.pdfIn PDF document text
    • http://samozanyat.info/refewabamebixitaketalixut16wb2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481516/normal_5ffe95f42e286.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469828/normal_5fc716106e38b.pdfIn PDF document text
    • http://rubka.space/33820659435d39y5.pdfIn PDF document text
    • https://cdn.sqhk.co/lelabepena/gcFMQgi/wildscapes_mod_apk_download_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372960/normal_60104d7678ddb.pdfIn PDF document text
    • https://cdn.sqhk.co/pimibopugugo/ZXiaPic/92109814872.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383692/normal_600968cfeaecc.pdfIn PDF document text
    • https://cdn.sqhk.co/nupozifulija/iggjdLR/56772928888.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388405/normal_5ff452c2e2f3a.pdfIn PDF document text
    • http://hiziryigit.online/muzepefidn3fri.pdfIn PDF document text
    • http://lovemecompletely.com/synonym_of_international_politics7c5jr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482018/normal_5ff4a0a16a526.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ed65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED65 5504 bytes
SHA-256: 95e180daa891ee9621cdcf3fa7dff7200803de7228e7875440760fa39402a390
font_01_sfnt_off00010043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10043 10476 bytes
SHA-256: afc0056425c489fdc140d17b657903aa27e7831de67198464e661580a29caf8c

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