Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3200c2fbe0fb769…

MALICIOUS

PDF

84.8 KB Created: 2021-03-24 08:55:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: b87d02d70765f95b9b65d5059e2d9074 SHA-1: 26aa584ffdf38823ed4a650b9ea0a24cc3ded056 SHA-256: b3200c2fbe0fb769302f27280e9ffdc8108a785e141c74154eed1b1a2f18e260
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains numerous external URIs, with one pointing to 'lozipotod.ru', suggesting a phishing or malware distribution attempt. The PDF's structure and embedded links indicate it functions as a link farm, likely to redirect users to malicious content. No scripts were extracted, but the presence of external links and the overall heuristic profile strongly suggest a malicious intent to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lozipotod.ru/strik?utm_term=best+table+topics+questions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454977/normal_603658856662f.pdfIn PDF document text
    • https://cdn.sqhk.co/nudizodi/icrjbMJ/nesuzolebixuzosirazuf.pdfIn PDF document text
    • https://cdn.sqhk.co/zezerixuwab/lP5hjz8/hide_applock_application_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391909/normal_601a40679aadf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410016/normal_5ff26177d6807.pdfIn PDF document text
    • http://woxuruko.medianewsonline.com/47955751728.pdfIn PDF document text
    • https://cdn.sqhk.co/kajipazuto/4qhiid6/piludo.pdfIn PDF document text
    • https://cdn.sqhk.co/libibajuzumu/6ihfux5/xuvorovofakep.pdfIn PDF document text
    • https://cdn.sqhk.co/molipigi/bhiQjbq/online_quran_teaching_jobs_in_uk.pdfIn PDF document text
    • http://jusukigib.sportsontheweb.net/bajajexutuwafevujijaz.pdfIn PDF document text
    • https://cdn.sqhk.co/tatogevi/khfja2N/pazuxasasobozodetaz.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/xubifupi/81061793228.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/30056129574.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d456809-7c15-4656-82d6-d257146d2c6a/microsoft_word_help_with_table_of_contents_formatting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/206ba692-0f21-44f6-a770-11cd6d3d1aeb/sony_bravia_kdl32wd752su_smart_32_led_tv_specifications.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/code_format_visual_studio_shortcut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d037f0b-0953-4a78-84b3-ff5705ec24fd/convert_latex_file_to_python.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/canada_visa_lottery_online_form.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/11481975261.pdfIn PDF document text
    • http://positajugopisu.myartsonline.com/basic_elements_of_landscape_architectural_design_download.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_off00010e49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E49 5144 bytes
SHA-256: 3cf370d62aca8ddaf34493602cead61a63c1fc90c24a59f52498184c104ea7fc
font_01_sfnt_off00011fde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FDE 10868 bytes
SHA-256: dc2f79f7552c1cab70161bc618ee9d9b06fe457e441e09a551801b3cf22af9c8

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