Malicious PDF — malware analysis report

Static analysis result for SHA-256 83fb119e9037970f…

MALICIOUS

PDF

110.7 KB Created: 2021-02-04 22:52:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: dc8b384da23865dc6648d661026c96e2 SHA-1: 41a7237c1bdd022da6c9978f059fd64047170f3d SHA-256: 83fb119e9037970fc82f47d4011bffe5d3378d7bce20be170bcad072c97f2cfb
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of an external URI points to an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/wb?keyword=camera%20360%20modded%20apk PDF link annotation
    • https://cdn.sqhk.co/vigefifobot/7NDjh6s/zuzamisi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452612/normal_5fecfef5a1deb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367937/normal_5fd38db382f52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370302/normal_5fd76f3a81f4c.pdfIn PDF document text
    • https://cdn.sqhk.co/lijipatalenu/bzZ1ghX/83352273848.pdfIn PDF document text
    • https://cdn.sqhk.co/towafeniruje/EnpgdVt/67292150969.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/betefowubevat/uwera_by_ambassadors_of_christ_choir.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/indian_movies_300mb_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/chloral_hydrate_dosage_form.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/ronamizuvasabujofetor.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/exit_interview_questions_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/android_apps_that_pay_you_real_money.pdfIn PDF document text
    • http://juxugalipexobow.epizy.com/93296170817.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/19764465889.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/74120505010.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00017155.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x17155 32812 bytes
SHA-256: 9aba970e33ba896fdc29850e9327eefd466a32889eb271ffd798543235268603
font_00_sfnt_off0001200a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1200A 2952 bytes
SHA-256: 013fc9f45313cdddd5762e6694753e55f6a85ad2eec225b6e17fd140af1ee5c7
font_01_sfnt_off00012a99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A99 5324 bytes
SHA-256: 469acfda6d84980870e5541ca4e6e12aea3c266ff44b90e9d8c926959ef14070
font_02_sfnt_off00013c90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C90 3984 bytes
SHA-256: 01325122c238d468db9f806a61daa442200cd56c77138da340cd07e805a01cb4
font_03_sfnt_off00014c8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C8A 10768 bytes
SHA-256: 0e14e383e877fcdbb4b81e476f846a1783f7807a9b04cbe5ce700843240933d0

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