Malicious PDF — malware analysis report

Static analysis result for SHA-256 36c875e5739dfd4e…

MALICIOUS

PDF

71.1 KB Created: 2021-02-23 06:26:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 48e6d29352374d7a90eb0517a5645fa9 SHA-1: a7862bcda688e4929ffb1ebb04552080b3d5e482 SHA-256: 36c875e5739dfd4e1f2b215f43ca66dc3038ba143639d9a2534489424827249d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=copy9+apk+cracked PDF link annotation
    • https://cdn.sqhk.co/nakijalufiw/7gen3jr/kepakimoxeji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409614/normal_60125f9d43320.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380523/normal_5fdc35a25673d.pdfIn PDF document text
    • https://xokebewogaxuwu.weebly.com/uploads/1/3/4/5/134588239/tubem.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/b1uxHCW/angry_stickman_5_hack_download.pdfIn PDF document text
    • https://sesuxaned.weebly.com/uploads/1/3/5/3/135349378/8339488.pdfIn PDF document text
    • https://jokinurelebuvet.weebly.com/uploads/1/3/1/8/131856462/kopimubumure-tagavo-derakevewu.pdfIn PDF document text
    • https://cdn.sqhk.co/tesebere/khd3heM/college_football_conference_standings_2020.pdfIn PDF document text
    • https://modovepa.weebly.com/uploads/1/3/4/4/134464072/4906846.pdfIn PDF document text
    • https://cdn.sqhk.co/zonelatu/lu6pIjg/my_verizon_wireless_login_business.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382639/normal_5ffec2831bad3.pdfIn PDF document text
    • https://cdn.sqhk.co/duputokodoz/5ge9ib6/15363234246.pdfIn PDF document text
    • https://cdn.sqhk.co/mugejufunij/5nAmkha/phantom_bomber_b17.pdfIn PDF document text
    • https://cdn.sqhk.co/kutupejotige/SUieIWb/amazon_gutschein_code_gratis_versand.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387232/normal_5fdd888ef125b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411686/normal_60344e26c6a5d.pdfIn PDF document text
    • https://cdn.sqhk.co/setawigiz/7hE2uhf/skyscraper_definition_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/lokabawopup/hfLYihp/white_ninja_jumpsuit.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/metubevozisul/how_to_terminate_an_at_will_employee_in_california.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/jobsplus_malta_cv_template.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/braveheart_piano_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/94711640596.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_off0000d95c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD95C 5084 bytes
SHA-256: 3be41312f6265144a4d5cfb2810bf3e48b65ecc51bfd84319484eb3cc9a646eb
font_01_sfnt_off0000eac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC2 10736 bytes
SHA-256: b61b40f1b5197165311f2b8f851768aff65bd1b93f7aee73748358835d59e15c

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