Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff8acfcdbadc4d9a…

MALICIOUS

PDF

74.5 KB Created: 2021-03-02 09:28:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2848a7ce18cb686cc873343b99760e67 SHA-1: b44b64662f0bb4102485a0fb65f976e358ebaf30 SHA-256: ff8acfcdbadc4d9a94f1c0a0133fd68ac9b27f186bdcfb8be9c88976a63f8bd6
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://midufefew.ru/wix?keyword=vw+t4+haynes+manual PDF link annotation
    • https://vidiwubiref.weebly.com/uploads/1/3/0/8/130874646/tinivosefafugag_mukaseb_pijexoz.pdfIn PDF document text
    • https://cdn.sqhk.co/komagiju/aaheggd/viwuxezeki.pdfIn PDF document text
    • http://sagomakavinogo.iblogger.org/lovuzowezu.pdfIn PDF document text
    • https://cdn.sqhk.co/busanurutar/lgiiiZ9/toon_blast_game_app.pdfIn PDF document text
    • https://cdn.sqhk.co/lajawawinu/gfhJheP/guess_telugu_movie_names_whatsapp_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/nebafori/ja9C7ij/inotia_4_story.pdfIn PDF document text
    • https://cdn.sqhk.co/sobekalob/jiejdje/one_stop_financial_aid_umn.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/zjaggU2/bufaxurexowu.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/QhjPugh/xolatodovami.pdfIn PDF document text
    • https://cdn.sqhk.co/dawupana/fmjibFZ/true_fear_forsaken_souls_part_2_extra_episode.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/telekom_malaysia_annual_report_2017.pdfIn PDF document text
    • http://bolilolu.epizy.com/fema_hurricane_maria_after_action_report.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/85827162175.pdfIn PDF document text
    • http://nexebudavosev.epizy.com/flexible_budget_performance_report_example.pdfIn PDF document text
    • http://wawutanow.epizy.com/jamajogol.pdfIn PDF document text
    • http://nerusejide.rf.gd/munatiligisilomaxelun.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/wegagamik.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/jaxuwu.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_off0000e66a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE66A 5076 bytes
SHA-256: d412f2f935e4e3309b1421797d69b78e4ca39fb0e8186dfc98013358ef62c771
font_01_sfnt_off0000f7aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AA 10944 bytes
SHA-256: 2aa54b1d1c33644bd572ee8a8ad1f1879cd893c3424f4b12836a61b77e9e2437