Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8602df0b2994435…

MALICIOUS

PDF

76.0 KB Created: 2021-03-06 09:44:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 44d214b95d83123a807ad0e1a841fd19 SHA-1: fe435bdfe64d454f7634e2d9b9c4ad60a0f6a736 SHA-256: b8602df0b299443506ec2320a7d0ab68210955375023bb0cd0fe7731574d3f13
126 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many pointing to disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links are characteristic of a phishing lure or a downloader for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://bologen.ru/wix?keyword=neuqua+valley+volleyball+camp PDF link annotation
    • http://pufivuziviv.mypressonline.com/kewebuvur.pdfIn PDF document text
    • https://dapalirodo.weebly.com/uploads/1/3/1/4/131483520/kuzemoze.pdfIn PDF document text
    • http://zoluwofemofuper.sportsontheweb.net/85409510192.pdfIn PDF document text
    • http://naturelofo.mypressonline.com/sokutewetalinisegivoxeb.pdfIn PDF document text
    • http://kushtanash.ru/bayliner_175_br_owners_manualzr2mo.pdfIn PDF document text
    • https://xevulesej.weebly.com/uploads/1/3/0/8/130874496/6305403.pdfIn PDF document text
    • http://povar2020.site/gegajowojzbiji.pdfIn PDF document text
    • http://zekaxezixil.medianewsonline.com/momo_traders_amazon.pdfIn PDF document text
    • https://cdn.sqhk.co/tejilunuf/SoeMDie/rozisu.pdfIn PDF document text
    • https://gepadagonuvo.weebly.com/uploads/1/3/0/7/130775626/5706427.pdfIn PDF document text
    • https://cdn.sqhk.co/fexiseme/hKhbhaw/crazy_for_speed_unlimited_coins_download.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/kunokadobames.pdfIn PDF document text
    • https://vawisopikev.weebly.com/uploads/1/3/2/7/132740649/xoxonurit.pdfIn PDF document text
    • http://obschee.xyz/muxumm6ab0.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/wahl_lithium_pet_pro_cordless_clippers_review.pdfIn PDF document text
    • http://rankingcoach-apps.com/modern_combat_5_mod_apk_rexdluprwh.pdfIn PDF document text
    • http://muldwych.com/wavodukevg5xum.pdfIn PDF document text
    • https://cdn.sqhk.co/xedufoga/ifhfjbG/dentures_and_demons__2.pdfIn PDF document text
    • https://cdn.sqhk.co/natefisaka/wQhciaq/pixelicious_color_by_number_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/jgd1Egc/huge_sports_card_collection_for_sale.pdfIn PDF document text
    • http://dududuw.mypressonline.com/kowefifobimawugikazanen.pdfIn PDF document text
    • https://fixizogi.weebly.com/uploads/1/3/5/9/135959929/d69bffcc4153f47.pdfIn PDF document text
    • http://pozufopajosel.mypressonline.com/wenaruvadufifofijuzuxadav.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zodiripek.myartsonline.com/nijotunebepujivo.pdfIn PDF document text
    • http://mutifesojare.epizy.com/13754398055.pdfIn PDF document text
    • http://xefujexomige.epizy.com/goodwill_drop_off_locations_melbourne_florida.pdfIn PDF document text
    • http://bazogito.epizy.com/45307344749.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_off0000e9f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F2 5200 bytes
SHA-256: 5dae11bfcb8f02f540965b48baced37eb0a10c7eff489ec42ed2127c6dddb138
font_01_sfnt_off0000fbb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBB0 11656 bytes
SHA-256: 0b97ac40d6e87aad7fecf531659c4087fb98a65c3998fdfefa4ce986c4e70105

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