Malicious PDF — malware analysis report

Static analysis result for SHA-256 5aab3df2be9836b6…

MALICIOUS

PDF

72.4 KB Created: 2021-02-24 05:15:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 290a1d7f55fa8dd7f180b784a05daf8c SHA-1: 3942a9ddcafdc9aa8fc01e95432b5d67c5a8d0ec SHA-256: 5aab3df2be9836b69434b55e16afefab73fda5d0bd653953f2d6f63c86a57aa1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jottigo.ru/wix?keyword=calories+in+a+grilled+pork+chop+with+bone PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408324/normal_5fca23e88103e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464863/normal_5fcd9eb147b55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480749/normal_6025d0ab503e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428038/normal_5fc8a33f7c8f9.pdfIn PDF document text
    • http://idealslimitalia-official.site/naval_aircraft_maintenance_manualuplze.pdfIn PDF document text
    • http://dorightschool.com/download_majesty_northern_expansion_full_apk5xryo.pdfIn PDF document text
    • http://misstourist.info/jaws_bookzwehq.pdfIn PDF document text
    • https://cdn.sqhk.co/negapevu/hcgf5gc/mobile_home_kitchen_cabinets.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418970/normal_60172660b07b7.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobibab/fMqhfjc/gowomugusizesuniruguxoleg.pdfIn PDF document text
    • https://cdn.sqhk.co/kosenopelid/ghylhfY/19611297568.pdfIn PDF document text
    • http://dorightpress.com/rixurononalelunakulotunij2tb9.pdfIn PDF document text
    • https://cdn.sqhk.co/wepunajexiju/jiiafjc/suxibepobeguj.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/zizene/i_r_c_t_c_app.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/asus_adb_driver_for_windows_7.pdfIn PDF document text
    • http://megisaduvivegi.epizy.com/word_cookies_2017_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/music_an_appreciation_8th_edition_ebook.pdfIn PDF document text
    • http://kidejuwukaj.epizy.com/my_birthday_photo_frame.pdfIn PDF document text
    • http://nisoruv.rf.gd/vlookup_get_value_from_another_sheet.pdfIn PDF document text
    • http://retukazitoja.epizy.com/free_avg_antivirus_pro_for_android.pdfIn PDF document text
    • http://fojisar.rf.gd/37059023548.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/rimuruzasebu.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/85131934503.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE61 5536 bytes
SHA-256: 28a4cce72e01fa606cb074e6889a1d3868f80fb0141773a31e0e7ae8e9682efb
font_01_sfnt_off0000f139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF139 10152 bytes
SHA-256: e64de425cc5ebbacee62952f525501797b33af7f01fea7eec3f6b2f49cad5f99

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