Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1cbef7df4a7611d…

MALICIOUS

PDF

41.9 KB Created: 2020-10-04 06:01:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 0b6772a5403b2f6276d0da90b87facac SHA-1: 86d30134b0a3291afc7057f70fbc58980fdf2c75 SHA-256: e1cbef7df4a7611d901a8afacf51b6e431ffe5ee240cb84fb9462d0770287db4
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://gettraff.ru/pify?keyword=dragon+ball+super+dub+schedule In PDF document text
    • https://site-1040293.mozfiles.com/files/1040293/14287679420.pdfIn PDF document text
    • https://site-1036938.mozfiles.com/files/1036938/watupajufop.pdfIn PDF document text
    • https://site-1038390.mozfiles.com/files/1038390/tojumis.pdfIn PDF document text
    • https://site-1039533.mozfiles.com/files/1039533/simibezaj.pdfIn PDF document text
    • http://jepixe.beth-vickers.com/uploads/1/3/1/3/131380429/414faeeae.pdfIn PDF document text
    • http://luraxif.rathcorschool.com/uploads/1/3/1/3/131398455/17c0ffe4f08.pdfIn PDF document text
    • http://nuriraluk.pacificcountycovid19.com/uploads/1/3/1/8/131856278/fizopu.pdfIn PDF document text
    • http://files.sandromontefusco.com/uploads/1/3/2/6/132681887/1ae1aa457cf96.pdfIn PDF document text
    • http://rifawo.columbusbaptist.net/uploads/1/3/0/7/130738971/peketo-luwewelem-xepiviseve-xutoko.pdfIn PDF document text
    • https://site-1042765.mozfiles.com/files/1042765/zenufidolen.pdfIn PDF document text
    • https://site-1036779.mozfiles.com/files/1036779/zimud.pdfIn PDF document text
    • https://site-1036923.mozfiles.com/files/1036923/40972049234.pdfIn PDF document text
    • https://site-1036716.mozfiles.com/files/1036716/84530394943.pdfIn PDF document text
    • https://site-1036858.mozfiles.com/files/1036858/luwufapu.pdfIn PDF document text
    • http://files.northliverpoolteachingschool.org/uploads/1/3/1/0/131070246/48c929.pdfIn PDF document text
    • http://files.lisabethphoto.com/uploads/1/3/1/3/131383921/fiwixaxeze-wuvuvu-vazadupow.pdfIn PDF document text
    • http://files.kelbryfashions.com/uploads/1/3/1/4/131453847/4f4818a5982.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D0 5476 bytes
SHA-256: a5cbab6da743e8c26e00b73642ee138505ac52d8e510468e1f512c9ec1360693
font_01_sfnt_off00007866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7866 10016 bytes
SHA-256: e725a4ade564ab759cb8966af6c630d060045cee0e9e3546ffd10154b9d074d1

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