Malicious PDF — malware analysis report

Static analysis result for SHA-256 566b22f395374861…

MALICIOUS

PDF

75.2 KB Created: 2021-03-22 10:29:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0370ff6030a5f6eecd3fd9954f020540 SHA-1: 781241b2b8efcfad83846330ff5515d810607c46 SHA-256: 566b22f39537486123909aab41f6fddee8ab7e68785c9b627a7bae6c339422ff
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, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host numerous links on disposable domains, a common tactic for phishing or malware distribution. The embedded URLs point to suspicious domains, likely serving as lures or download sites. Although no scripts were explicitly extracted, the nature of the heuristics and the presence of numerous external URIs strongly suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://mezovuduw.ru/aws?utm_term=hague+watermax+parts PDF link annotation
    • https://pinozawekik.weebly.com/uploads/1/3/4/5/134589254/jevidulaji-jifigenopafol-kolafoniru.pdfIn PDF document text
    • http://help-igcopyright.xyz/transformations_on_coordinate_plane_worksheet56gf0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416493/normal_60180768918a0.pdfIn PDF document text
    • http://autolombardpro.ru/lifes_little_instruction_book_best_quotesf9i5z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379379/normal_5fde2f29316f4.pdfIn PDF document text
    • http://moreprodukti.com/spanish_missions_in_texas_worksheetsvr90z.pdfIn PDF document text
    • http://getyourcredit.info/28595773777jepat.pdfIn PDF document text
    • http://info-pages.ru/rhino_band_apple_watch_series_3cby9q.pdfIn PDF document text
    • https://cdn.sqhk.co/losokifape/VvXTOhe/26228128205.pdfIn PDF document text
    • http://rezotu.xyz/teds_garage_menuf7kma.pdfIn PDF document text
    • https://sugulidan.weebly.com/uploads/1/3/4/5/134508933/0db0167a42869.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwopaperuv/ujdMhdr/zidum.pdfIn PDF document text
    • https://cdn.sqhk.co/ganuniwiku/FhbXsgg/175776990.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456667/normal_5ff61d64ad2c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427783/normal_6017c884d060e.pdfIn PDF document text
    • https://cdn.sqhk.co/tipadasa/jeKKHcv/kepemetesimuzefesubipi.pdfIn PDF document text
    • http://deflecfcvy.best/hp_deskjet_6940_warning_lightshhvzm.pdfIn PDF document text
    • https://cdn.sqhk.co/kimefutif/eChcAgi/caption_property_access.pdfIn PDF document text
    • https://rejaduwewuwuga.weebly.com/uploads/1/3/1/8/131856140/wagumomidawari.pdfIn PDF document text
    • http://kindraretterath.com/doug_kaufmann_diet_reviews4i33k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410975/normal_6016364e52b62.pdfIn PDF document text
    • http://mydenverneighborhoods.com/87431218260l20jv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c7fb3737-a2fb-4e06-b71d-f78b648bb0a4.filesusr.com/ugd/a9248e_f0be858f132146e8b6644605b5aaccce.pdf?index=trueIn PDF document text
    • https://d920bd67-dfaf-4c99-85b0-fcb8118dfb91.filesusr.com/ugd/383849_d54e37e92f9a4fb2b788470ee78ca201.pdf?index=trueIn PDF document text
    • https://85fc0914-20e3-4f1c-be8c-de7e6f89f47e.filesusr.com/ugd/a44510_18faccab3c8b4e4c95b4566f4a05819b.pdf?index=trueIn PDF document text
    • https://1a899ca6-11bf-4464-971e-4bf0b885e765.filesusr.com/ugd/4ac3ff_54465e1a986a4ce2a23a23cc4d61f2cc.pdf?index=trueIn PDF document text
    • https://5053e88e-9e18-4719-890c-32a1cca0295d.filesusr.com/ugd/411503_51fa1183b99b40979c38b90eeb5a41e1.pdf?index=trueIn 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_off0000e7e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E6 5228 bytes
SHA-256: c09e97c88498fb413946590318eabe474b471995444d450077f08c2fad81da31
font_01_sfnt_off0000f9b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B3 11008 bytes
SHA-256: bfceffc00a64278bdc36308db5dbd9ff18d081a46cf216b01b13247ab17e369d