Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e3089ace8f3d5d1…

MALICIOUS

PDF

77.4 KB Created: 2021-02-07 21:22:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0c5029b20bf124395a7dc167a7e7c670 SHA-1: c454d238a9dd8e9f7534d05df43886c2f1b83de2 SHA-256: 7e3089ace8f3d5d1fda73b25a5a5d7bbc4a209b774d524dd9d378d8e775f95b2
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of numerous external URIs, including one that appears to be a link farm on disposable hosting, suggests the document is designed to redirect users to potentially harmful websites. The document body, though heavily obfuscated, contains metadata related to 'Lifetime fitness schaumburg careers', likely a lure to entice users to click on the embedded links.

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://baarspo.ru/123?utm_term=lifetime+fitness+schaumburg+careers PDF link annotation
    • http://heleogose.online/powerful_verbs_worksheet_6th_graderv06z.pdfIn PDF document text
    • https://cdn.sqhk.co/zujubokave/jb1ihge/super_chat_in_app_purchase.pdfIn PDF document text
    • https://vuwonogi.weebly.com/uploads/1/3/5/3/135300132/7871459.pdfIn PDF document text
    • https://cdn.sqhk.co/govovazeket/hddGgfl/51775926897.pdfIn PDF document text
    • http://lyudi23.ru/35740882928m2sp8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382189/normal_5ffcf0581422b.pdfIn PDF document text
    • http://enots.space/49500145796cnjzn.pdfIn PDF document text
    • http://storeplus.info/checkstyle_generate_html_reportsrmyz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394072/normal_5ff19be7cd78a.pdfIn PDF document text
    • https://pejasosujotu.weebly.com/uploads/1/3/2/6/132683127/livubupem.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470552/normal_5fdd3ee0e89ac.pdfIn PDF document text
    • https://kawuzuvom.weebly.com/uploads/1/3/1/3/131379118/126cc773.pdfIn PDF document text
    • http://expressvpn.store/pukiluwepiperolpj0u8.pdfIn PDF document text
    • http://damvglaz1.xyz/vizojeku3fava.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450240/normal_5feb7be397b33.pdfIn PDF document text
    • https://cdn.sqhk.co/zanotunuzi/iexGgif/angry_birds_2_game_download_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/modajili/hgN4Jid/cima_business_game_2020.pdfIn PDF document text
    • http://guitar.su/reborn_black_dolls_for_salezl44u.pdfIn PDF document text
    • http://parhelifrl.space/global_citizenship_definitionom311.pdfIn PDF document text
    • http://grantmedica.ru/new_peoples_bank_hoursd5d24.pdfIn PDF document text
    • https://kijaxupujik.weebly.com/uploads/1/3/2/6/132695195/febekezuvokogax.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f17e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17E 5344 bytes
SHA-256: c76d7b77c464d39f160e711229ed1dc0260c74d5be1fe755adc9985b9d0cc0a5
font_01_sfnt_off0001038a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1038A 10732 bytes
SHA-256: 0482bfa5102a05a7b097af9a7ce41d678be4089a9d386e0ae88fa3b598029ea0

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