Malicious PDF — malware analysis report

Static analysis result for SHA-256 4381373853bddec1…

MALICIOUS

PDF

90.9 KB Created: 2021-03-20 19:18:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b15a23aa7119c654a38723fb0467fe1c SHA-1: 9d29b7e87346ff3bcbc89a81c0945e3ebcfcb75f SHA-256: 4381373853bddec1b445e3a804bc144bd27890e71c813e83db9864844d5781ec
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 0.9993

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://seumenha.ru/strik?utm_term=california+zephyr+route+timetable PDF link annotation
    • http://newuwedeza.mypressonline.com/food_contamination_definition.pdfIn PDF document text
    • http://gudokav.sportsontheweb.net/tom_sawyer_movie_1973_cast.pdfIn PDF document text
    • http://lakujalinifibo.mypressonline.com/blended_learning_research_papers.pdfIn PDF document text
    • http://suruxawabasi.iblogger.org/vapoworajifigosub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390641/normal_5fddaaaea0177.pdfIn PDF document text
    • http://tamasolesodaj.mypressonline.com/jezijononivu.pdfIn PDF document text
    • http://lulopoboxefon.scienceontheweb.net/what_is_a_blue_jacket_in_the_navy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476954/normal_5fe54c0c91d73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421637/normal_5fd960385e5a6.pdfIn PDF document text
    • http://bitalotava.scienceontheweb.net/94187660572.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372073/normal_5fea0c2c6f1cf.pdfIn PDF document text
    • http://garanibukumom.scienceontheweb.net/54461098396.pdfIn PDF document text
    • http://volalagokiva.sportsontheweb.net/b_d_chaurasia_free.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/pubopelej/bca_erss_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0abcb2c4-13e5-4530-84eb-89077979c7e9/7629986250.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/towevamas.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/79849844804.pdfIn PDF document text
    • http://tosazakutug.rf.gd/begenepapugopuwijeb.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/canon_pixma_mg3022_driver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83af9519-5b6b-4dc3-8f19-a5530d7bb408/6208673255.pdfIn PDF document text
    • http://supetok.rf.gd/direction_worksheet_for_grade_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5afacf1d-6bae-4491-8d81-34be1d2cda41/what_is_the_job_description_for_assistant_manager.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/70175271583.pdfIn PDF document text
    • http://xutakubu.epizy.com/honeywell_electronic_air_cleaner_filter_installation.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_off00012599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12599 5160 bytes
SHA-256: 2b1365404a3a858e56886357afcfa2a191567170167ca06b379f05d7111be77b
font_01_sfnt_off00013709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13709 11476 bytes
SHA-256: bf37773a70f6d17f756b077c4d8f723275cd71859441311823b1f351bbef8fbb

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