Malicious PDF — malware analysis report

Static analysis result for SHA-256 34d6460b08f523d8…

MALICIOUS

PDF

52.1 KB Created: 2020-10-16 10:58:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 02547c3d20ef6fb8efb2a50753467646 SHA-1: a63bbc1a6af676b4e3dac1815220ba9b0043d096 SHA-256: 34d6460b08f523d8aeb56c19bdd8cc9d93e5387f2c853f5c4241fc459c0c3f0b
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/123?keyword=como+hacer+microorganismos+de+monta%25C3%25B1a+pdf In PDF document text
    • https://paduxadoduxim.weebly.com/uploads/1/3/0/7/130775016/renarozuragizozu.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/gosibokuvefuj.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/2556250.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/monirafulowafix.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/vudodapazepipux_kijemomebegax_velagokotukif.pdfIn PDF document text
    • https://bogadisosupotaj.weebly.com/uploads/1/3/0/7/130776541/7305906.pdfIn PDF document text
    • https://sujajikozodes.weebly.com/uploads/1/3/1/3/131384638/rimemid_zepivetuwowim_kirarikuze.pdfIn PDF document text
    • https://sekojufakov.weebly.com/uploads/1/3/0/7/130776719/068586e6.pdfIn PDF document text
    • https://vunixumo.weebly.com/uploads/1/3/1/4/131453253/nisugavupopojob.pdfIn PDF document text
    • https://roninuvanajeg.weebly.com/uploads/1/3/1/3/131379749/34935e249.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/5b300b.pdfIn PDF document text
    • https://sovopubi.weebly.com/uploads/1/3/0/7/130775052/dbc932.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f87a8c345c18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367646/normal_5f88bcd1a7e3a.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/2f656889-dc1a-48ba-a09e-419399079caf/susarutefexadisumegov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07c4a6d0-26dd-4e3f-b4ab-72ab7d414c9b/11047247206.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0885bfc6-9c40-44b0-aed2-ef376feec15b/rawabowutot.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000730a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x730A 5656 bytes
SHA-256: 980c5dc84438693002ffdec91d47f0a9ee55d036882f283036978f4a70ac0117
font_01_sfnt_off000085da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85DA 11316 bytes
SHA-256: 6e1c0d9cdc8e74b7140125e312c0419d359cbc1c2a7bebf7eae35a5bdd562b5f
font_02_sfnt_off0000aab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAB1 16312 bytes
SHA-256: aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0

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