Malicious PDF — malware analysis report

Static analysis result for SHA-256 87a053a4a3a0d2f9…

MALICIOUS

PDF

67.9 KB Created: 2021-02-25 22:07:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: fd67d314a87ee7901d7761033b9fa7e9 SHA-1: fd3619e741065a5b03d79af4066bb778c5b7c7a7 SHA-256: 87a053a4a3a0d2f908a59b452069379b38f017b79a613cc182fa8f119ca86063
94 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI pointing to a suspicious domain, and the document body, though heavily obfuscated, includes text related to the URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the presence of a malicious URL suggests an attempt to redirect the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8381

Heuristics 3

  • 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
  • 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://jacksth.ru/award?keyword=best+books+for+married+couples+to+read+together PDF link annotation
    • http://nowukusox.mypressonline.com/kubota_bx25_attachments.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/what_is_infrared_foot_spa.pdfIn PDF document text
    • https://lilalosemojuwo.weebly.com/uploads/1/3/0/8/130814601/79e49dee72b.pdfIn PDF document text
    • https://vutavapurazamo.weebly.com/uploads/1/3/4/6/134643269/kexewijowo.pdfIn PDF document text
    • http://lomigakorak.getenjoyment.net/20394948265.pdfIn PDF document text
    • http://ruguwafe.scienceontheweb.net/how_to_ignore_a_guy_on_social_media.pdfIn PDF document text
    • http://satofaxa.iblogger.org/61683221582.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/zusevamasor/bekubarapiwavarenilaj.pdfIn PDF document text
    • http://saguzexebotaju.epizy.com/asp.net_mvc_dropdownlist_selectedindexchanged.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/xajinokisoxi.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/amelia_bedelia_goes_camping_guided_reading_level.pdfIn PDF document text
    • http://jekedizineropo.rf.gd/garokevewazovorik.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/camera_360_app_for_iphone_free.pdfIn PDF document text
    • http://subutolibi.rf.gd/tesalekowofupipajezi.pdfIn PDF document text
    • http://setewexevevel.epizy.com/nezorogivipujubaponogog.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/77905184637.pdfIn PDF document text
    • http://tozusudasasu.rf.gd/tujax.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/lightroom_premium_3._5._1_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/social_enterprise_definition.pdfIn PDF document text
    • http://sepusuvom.epizy.com/24525757094.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE834 5596 bytes
SHA-256: ce617ee177a46a289aa00532d52eac83aa4a7471d016a2d20d3105a2674cb05c

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