Malicious PDF — malware analysis report

Static analysis result for SHA-256 008c88584e50e861…

MALICIOUS

PDF

74.3 KB Created: 2021-05-09 04:32:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8600460d4621cc009bb01975d4bc28f4 SHA-1: 986a20c8e52ad3876f2ccf6569d8ff3872c82e2e SHA-256: 008c88584e50e861f9bb94b255f528014783beb7201b640aef356349d6dc93ff
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/strik?utm_term=the+endocrine+system+consists+of+blank+that+secrete+blank+into+the+bloodstream PDF link annotation
    • http://xofofumireke.mypressonline.com/diccionario_de_armando_hoyos_descargar.pdfIn PDF document text
    • https://cdn.sqhk.co/worekoxe/ih8bhT0/76324610740.pdfIn PDF document text
    • http://dorisedijizido.iblogger.org/youth_dirt_bike_gear_ebay.pdfIn PDF document text
    • http://xexejidabame.22web.org/rezopuladugi.pdfIn PDF document text
    • https://cdn.sqhk.co/rufopunuk/Wjj57SE/aesthetic_wallpapers_blue_neon.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuzigup/aLTifhj/fantasy_football_name_generator_seahawks.pdfIn PDF document text
    • http://pirewarekow.mywebcommunity.org/68929433646.pdfIn PDF document text
    • https://cdn.sqhk.co/jawefujivi/cGMHggT/battlefront_2_pc_player_base_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/jabuvilir/jiiengg/funny_notification_sounds_in_telugu.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/105e57bd-8a39-45c6-bf46-98980bbe9e6f/witapi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/701d58a4-b0bb-4b22-aafe-f4f89bd75624/luzonepozaniweguwe.pdfIn PDF document text
    • http://nemenarubaz.atwebpages.com/ontario_cervical_cancer_screening.pdfIn PDF document text
    • http://gagafexekoxoseb.epizy.com/23718870287.pdfIn PDF document text
    • http://luledajosa.epizy.com/hp_laserjet_pro_400_printer_m401n_specifications.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7a8a27b-946e-4ee2-9feb-9b44342ef80c/rowejutewutuvuwizadupe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee378879-11bc-4c25-8ad5-23bbae79eaf9/panasonic_phone_model_kx-tgea20_user_manual.pdfIn PDF document text
    • http://negumigimewote.onlinewebshop.net/the_odyssey_book_1-10_quiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d44abc11-232f-4b8b-bbff-7bdb1591d760/29910318325.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95635fe7-618a-441f-9529-a6a5244c3800/nijajizipexagofesi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df2cc4a8-25e7-4e50-a7ca-01c1e756c5fe/87057315300.pdfIn PDF document text
    • http://fufibilola.epizy.com/33949348444.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_off0000e460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE460 5516 bytes
SHA-256: bb3c06539222286ee6ccc9376e5037942579c124daccf9d7ed4a0e24c01bc832
font_01_sfnt_off0000f6fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6FD 10388 bytes
SHA-256: 6dc311fcb0596838b13ece49c88601e2e73b80348e27466214ae5491cae2322e

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