Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a63d2147414fb1d…

MALICIOUS

PDF

58.0 KB Created: 2020-10-03 07:50:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c44ff9bf303357092dadd9b0c7986973 SHA-1: 6ddebc3b0a78217ba2ea70263c55d7b680a38be8 SHA-256: 2a63d2147414fb1d7beafda1791aefe74fce733a1ccd30858591d56bf9b1e012
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://ggtraff.ru/strik?keyword=darkest+dungeon+enemy+types In PDF document text
    • http://files.onpointgreatdanes.com/uploads/1/3/1/1/131164066/xiwuj_zuxewawogifep.pdfIn PDF document text
    • http://files.main-global.com/uploads/1/3/1/6/131637254/likinemigowigiwo.pdfIn PDF document text
    • http://files.mbtaiji.net/uploads/1/3/0/8/130873851/1363479.pdfIn PDF document text
    • http://files.laketheband.com/uploads/1/3/2/7/132741302/03849d50a3.pdfIn PDF document text
    • http://zoroxixor.standstrongcoalition.org/uploads/1/3/1/3/131383478/8089495.pdfIn PDF document text
    • http://suminumu.benjaminrsummers.com/uploads/1/3/1/6/131606490/jajiro-nabolaluzis-somudivasaw.pdfIn PDF document text
    • http://files.hairstongallantfamilyreunion.net/uploads/1/3/0/7/130775427/zanutuwabogelafolo.pdfIn PDF document text
    • http://files.stmva.org/uploads/1/3/0/9/130969209/330264e1196.pdfIn PDF document text
    • https://site-1036649.mozfiles.com/files/1036649/36379772468.pdfIn PDF document text
    • https://site-1037219.mozfiles.com/files/1037219/40891514059.pdfIn PDF document text
    • https://site-1036721.mozfiles.com/files/1036721/451041674.pdfIn PDF document text
    • https://site-1036902.mozfiles.com/files/1036902/84710732221.pdfIn PDF document text
    • https://site-1039922.mozfiles.com/files/1039922/kekulelakanufeman.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4435/9322/files/xupupiveza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/0074/6143/files/florida_secretary_of_state_admin_dissolution_for_annual_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/3531/9461/files/kuzadogarezazudas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3977/9747/files/xefevunizuxetisitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9820/5080/files/fox_meadow_middle_school_colorado_springs.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

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_off0000a5ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5AB 5412 bytes
SHA-256: 83878da8f1b0302b5576ece01cfdfab7539e2641711145a92d7568e00e06a8e3
font_01_sfnt_off0000b811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB811 10152 bytes
SHA-256: 05f700aece4a9b30febdca7e49372e16e6d4e094152a8d5a61acec9d13050f3f

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