Malicious PDF — malware analysis report

Static analysis result for SHA-256 6076bfec47a29c23…

MALICIOUS

PDF

74.3 KB Created: 2021-03-12 17:17:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 57403739653051bd64252dc13a726057 SHA-1: 4836d8ee55c384f0f5cd1b672d6217d88d7c0dda SHA-256: 6076bfec47a29c2328aa0965f195d708068bc28125272fdb294879da7a54619a
126 Risk Score

Malware Insights

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

The PDF document contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the overall structure point towards a phishing lure, likely aiming to redirect users to malicious sites such as 'https://pelibifir.ru/123?utm_term=rockstar+games+launcher++page'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://pelibifir.ru/123?utm_term=rockstar+games+launcher++page PDF link annotation
    • https://cdn.sqhk.co/kixituvelil/ySgegf9/tavoxenogederusar.pdfIn PDF document text
    • https://cdn.sqhk.co/mesafovojifo/hOTRpjd/18026740360.pdfIn PDF document text
    • https://cdn.sqhk.co/jamosolil/gprRjc3/62900694590.pdfIn PDF document text
    • http://dopogabijup.mywebcommunity.org/how_to_study_for_the_apush_exam_in_a_week.pdfIn PDF document text
    • http://topukovatawosu.sportsontheweb.net/dnd_5e_gunslinger_class.pdfIn PDF document text
    • http://trixy-matrix.space/505602234233y8vq.pdfIn PDF document text
    • https://cdn.sqhk.co/xerolunem/7XhfgjE/89490042210.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366973/normal_6045129506c87.pdfIn PDF document text
    • https://cdn.sqhk.co/sugezigo/Lhjtic2/ballz_deep_stick_figure.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/bkhcQuz/nails_for_you_prices_erin_mills.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuxopova/ibi1Tib/17136904789.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/jafgeij/zombie_traffic_racer_extreme_city_car_racing_game.pdfIn PDF document text
    • http://pearhaidhr.fun/nortel_m3904_phone_instructionsqz8bo.pdfIn PDF document text
    • http://skout.tech/44554346167rbxto.pdfIn PDF document text
    • http://vinnipoh.space/witufonanifbw3dl.pdfIn PDF document text
    • http://roburupagosode.iblogger.org/ib_biology_course_book.pdfIn PDF document text
    • http://mopomelodow.iblogger.org/the_maze_runner_2014_movie_720p_dual_audio_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386079/normal_6014cee9eba50.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xesidif.epizy.com/godfather_3_parents_guide.pdfIn PDF document text
    • http://fomidofuwonuw.rf.gd/gigexabibipixikusibitojit.pdfIn PDF document text
    • http://pexirud.onlinewebshop.net/mearsheimer_tragedy_of_great_power_politics.pdfIn PDF document text
    • http://risuduk.epizy.com/axar_patel_images.pdfIn PDF document text
    • http://wazeniwemir.onlinewebshop.net/highway_safety_corridor_pennsylvania.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_off0000e6d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D3 5420 bytes
SHA-256: dcb8f0b65bf7d9d099b59fe778ff6c26526406e6db6c9994b5cc39b9471029e2
font_01_sfnt_off0000f923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF923 10200 bytes
SHA-256: a9c10e1f908b97dd83952d036ad0c55831e62ed57dad434e411c6385ab75d66f

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