Malicious PDF — malware analysis report

Static analysis result for SHA-256 59a0cd7a00a5ce32…

MALICIOUS

PDF

75.0 KB Created: 2021-04-08 03:37:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: b52292eb6f1a016373823392c5633376 SHA-1: 939428bdaebdb18839962010dfdbef0d4e651194 SHA-256: 59a0cd7a00a5ce329df330180f617c220194ad9731536c0361fd8ba2bda30d97
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains a large number of links, many pointing to disposable domains, suggesting a link farm designed to distribute cracked software. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fujelaxu.weebly.com/uploads/1/3/4/7/134704358/delilejanatuli.pdf In PDF document text
    • http://saluzoz.iblogger.org/warehouse_safety_signage_requirements.pdfIn PDF document text
    • https://wugabatove.weebly.com/uploads/1/3/5/3/135318753/wiladakadod-pixajatubi.pdfIn PDF document text
    • http://jodefugivu.22web.org/can_you_sell_foot_pics_on_onlyfans.pdfIn PDF document text
    • https://kitivagep.weebly.com/uploads/1/3/0/7/130775950/rujokapunijulasuluzu.pdfIn PDF document text
    • https://fizegebukuri.weebly.com/uploads/1/3/1/4/131453213/sixixaropida_puxebepevuburoz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/dN4lCoxrs6M/wb?keyword=avid%20pro%20tools%2011%20crack%20macPDF link annotation
    • https://uploads.strikinglycdn.com/files/d30d6b63-e988-44eb-943d-122529653109/revolt_against_the_modern_world_xurious.pdfIn PDF document text
    • http://zawuruwune.epizy.com/inch_thread_size_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/namawoxokijanibupopefazu.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/er_diagram_drawing_software_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27517529-ee7e-4215-a1f2-f7630a35243e/rirewubelawu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05058549-99e8-4820-9fd4-f0f0ac5332d0/dokolukeda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83f1d81e-e4b2-4e94-9ca2-a2f3ff72814e/the_green_mile_movie_length.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/black_box_answers_magnifying_glass.pdfIn PDF document text
    • http://kedogevakubonog.epizy.com/76130776571.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/accounting_internship_report_essays.pdfIn PDF document text
    • http://kodugexibitomo.rf.gd/cbse_12th_biology_textbook_download.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/jigobudaxizotutetufemuwon.pdfIn PDF document text
    • http://bovimobutenivu.rf.gd/11287506625.pdfIn PDF document text
    • http://zejeriwetijetez.rf.gd/malaria_prevention_and_treatment.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_off0000e823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE823 5384 bytes
SHA-256: a4d5a0477b9de66dc2444739f4f26bbf1790872830c0d55ff9fc05bd9fd8cb3c
font_01_sfnt_off0000fa74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA74 10788 bytes
SHA-256: 8f03d5ae85694be75e972f9f9469a63bf92e4407aae5923090563c71ec6c4279

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