Malicious PDF — malware analysis report

Static analysis result for SHA-256 24a6879f02bde4ab…

MALICIOUS

PDF

63.3 KB Created: 2020-09-30 09:52:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 2b9072ef7194e4b3e21490d3b05d47a6 SHA-1: 640ec009492422439db6242d8ced1a2145b1694f SHA-256: 24a6879f02bde4abab3e304c91dedc9f7b7bfeacafb23e7a19b96449fc60309f
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://cctraff.ru/strik?keyword=guggenheim+museum+bilbao+architecture+pdf In PDF document text
    • http://files.hutchingsfraktur.com/uploads/1/3/0/9/130968950/totekobirole.pdfIn PDF document text
    • http://files.aaronsweed.com/uploads/1/3/1/3/131383630/masugafomoguje.pdfIn PDF document text
    • http://files.kellydaydreamer.com/uploads/1/3/1/8/131871453/jaligitoduruxig.pdfIn PDF document text
    • http://files.crumblesbynicole.com/uploads/1/3/0/7/130740084/4720885.pdfIn PDF document text
    • http://files.51ststreetchicago.com/uploads/1/3/0/8/130814205/vuxogujog_jifuzox_kapabo_rotaw.pdfIn PDF document text
    • https://site-1036699.mozfiles.com/files/1036699/21984530369.pdfIn PDF document text
    • https://site-1037055.mozfiles.com/files/1037055/27799759100.pdfIn PDF document text
    • https://site-1037230.mozfiles.com/files/1037230/52347940491.pdfIn PDF document text
    • https://site-1037149.mozfiles.com/files/1037149/bopagilefobok.pdfIn PDF document text
    • https://site-1036982.mozfiles.com/files/1036982/libofapopepoxuvuwoses.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/9bac7a24-d9bd-4210-a1c6-5944f8352329/xewulemikegolekifopa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84b64246-7d20-44eb-a6da-a81a44f7cbe0/76801254796.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cc34f6b-c1b1-4d51-8e79-df9dd6c14712/22234817345.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/218b850b-4b40-4ecb-becd-9e14d73c65f8/bosuvutaku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3d695b8-2b48-448e-b9c6-0fec8e1dbc56/kitanabujisikuvuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d014c3a9-2c46-4b85-b682-258630617253/8121547495.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71bc1b72-a19a-4c41-9670-d752503c4232/75724140636.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9748664-7e8e-4fee-b5fe-85ffdbb334bc/pixipomikitedinegunad.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a7f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7F7 6744 bytes
SHA-256: 127b44c9f93874c96d25eb7ddc4688780d8877ce931cf296363fb5748d8d514b
font_01_sfnt_off0000b8de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8DE 5740 bytes
SHA-256: acd93311273dfa88aca3474e92cd0ba5f16252344fff2c44bf3798c75818eb6d
font_02_sfnt_off0000cc41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC41 10144 bytes
SHA-256: 5f8439c1640be84e04ad42d28f904158f57248d29c6bbd434def8e559ea9ffd1

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