Malicious PDF — malware analysis report

Static analysis result for SHA-256 08d77268347c8a71…

MALICIOUS

PDF

75.7 KB Created: 2021-02-25 10:27:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 381f7a6a8c3376454e82f5342045a80d SHA-1: 1b784ec0cf6a752cb199bc88fa4dde41898a7280 SHA-256: 08d77268347c8a71f176376b545a461cd4a7b77f57166070f652bc680e8b185d
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/aws?utm_term=maxiscan+ms300+link+error+honda In PDF document text
    • http://chaptejvxz.fun/752352185266dckc.pdfIn PDF document text
    • https://cdn.sqhk.co/bemoranoz/ggMJSgh/67114014931.pdfIn PDF document text
    • https://lanujedajifita.weebly.com/uploads/1/3/1/3/131382078/32251.pdfIn PDF document text
    • https://cdn.sqhk.co/polidupokasu/iajhzjd/the_banner_saga_3_gameplay_ita.pdfIn PDF document text
    • https://jolidezebixisu.weebly.com/uploads/1/3/3/9/133997790/1044748.pdfIn PDF document text
    • https://rivewatot.weebly.com/uploads/1/3/3/9/133999312/1699878.pdfIn PDF document text
    • http://rifikelatukuw.iblogger.org/what_does_physical_and_mental_stamina_mean.pdfIn PDF document text
    • https://cdn.sqhk.co/sativomofij/hjx2hjT/bad_day_song.pdfIn PDF document text
    • http://bokubewere.22web.org/meditations_on_first_philosophy_meditation_2_summary.pdfIn PDF document text
    • https://lifovidas.weebly.com/uploads/1/3/1/8/131856672/tojod_sesodumexa_taxovali_pokumigakoduj.pdfIn PDF document text
    • https://gunefadube.weebly.com/uploads/1/3/5/3/135388078/3610446.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tewalilakoj.rf.gd/horse_racing_game_board_template.pdfIn PDF document text
    • http://lafosowewamute.epizy.com/mblex_study_guide_reviews.pdfIn PDF document text
    • http://karuzuk.rf.gd/boat_license_test_answers.pdfIn PDF document text
    • http://xadeboni.epizy.com/85676734871.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_off0000e8c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C7 5624 bytes
SHA-256: 7c64d2baa4460857888ca861eecfb463b2c8a2163db9538742f4b84d3d677ce0
font_01_sfnt_off0000fbc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC3 11328 bytes
SHA-256: e60b5b84ab5bed66ad2c04a374663c78429bc4fb29ad5873a4db2faf062f3544