Malicious PDF — malware analysis report

Static analysis result for SHA-256 010b92ce26db50ce…

MALICIOUS

PDF

90.7 KB Created: 2021-03-24 17:49:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 50a378ba3110439f5889e3403a3d282e SHA-1: 7afb264fe3a694b7e168ff9eea5641ba385d2f5f SHA-256: 010b92ce26db50ceaa36b84ee10200efc486e5125cf322d67b0dd70594e388b9
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to 'fokemale.ru' and containing a '48 laws quotes robert greene' parameter, suggesting a lure related to this topic. The PDF's structure and the presence of many external links indicate it functions as a link farm designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://fokemale.ru/strik?utm_term=48+laws+quotes+robert+greene PDF link annotation
    • http://ooovseanalizi.ru/10595853758ez7kd.pdfIn PDF document text
    • http://remastacer.com/itc_bookman_demi_bold_freeq686s.pdfIn PDF document text
    • http://antonioita.fun/20287274189wny86.pdfIn PDF document text
    • http://wunadimizurened.medianewsonline.com/vitamix_5200_blender_sale.pdfIn PDF document text
    • http://xelasurugopu.mywebcommunity.org/waketosimoxisidazawuk.pdfIn PDF document text
    • https://cdn.sqhk.co/kinuneba/jit4uhi/kudixekanoz.pdfIn PDF document text
    • http://ritual-venki.online/2016_amc_10b_problem_25cry0f.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/Vhaohfe/house_flipper_xbox_one_controls.pdfIn PDF document text
    • http://videohost.space/dufelez2wjkw.pdfIn PDF document text
    • https://cdn.sqhk.co/faxidopudome/RsuvNij/motorbike_driving_simulator_3d_mod_apk.pdfIn PDF document text
    • http://xijivedijimidip.mygamesonline.org/hannah_arendt_ber_die_revolution.pdfIn PDF document text
    • http://bio-ita.fun/632872345371c649.pdfIn PDF document text
    • http://50offshop.info/roluzijexie1cdw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/db73fcf8-80cf-4b9f-a535-d444e2ba6d33/how_to_translate_chinese_site_to_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36082d76-8148-42d2-856d-c281d3332443/sexokadelodowu.pdfIn PDF document text
    • http://pulijivugis.epizy.com/supplier_corrective_action_form_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7c3f31b-6a62-4334-acc4-294414ac6b87/beats_by_dr._dre_powerbeats_pro_in-ear_truly_wireless_headphones_-_moss.pdfIn PDF document text
    • http://jezedor.epizy.com/45460218121.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8317b152-14a1-49ce-bd86-a9c34622e39d/52324924857.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/189e0be9-be53-4177-8f5a-a2ca0bccf127/gogodun.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/93372286091.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_off0001279f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1279F 5396 bytes
SHA-256: e220f97b037d4acdeb1e6c4b26b225ce1e3b1fe76da6ba88203420801e12f02b
font_01_sfnt_off00013a1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A1E 10556 bytes
SHA-256: 0b62091341b8ba86b3497b363649ee7a5ca522b2cbad276e1b2aec5f15564378

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