Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6c75aac8dd9d953…

MALICIOUS

PDF

44.1 KB Created: 2020-10-08 13:49:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 511d3f3bea381a2d6f2bb371d517cab1 SHA-1: 794fe09611c3fafb0dccdba19486c3bb3c55f1cc SHA-256: f6c75aac8dd9d953e06e7009ccfdd2b8fbaa323302e28a8a0d6c420ed5a17d3e
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=the+things+you+can+see+only+when+you In PDF document text
    • http://files.chrishhphotography.com/uploads/1/3/1/0/131070483/nikis_zogejo_woxobol_dixom.pdfIn PDF document text
    • http://fapad.lmcooke.com/uploads/1/3/0/7/130776031/3249149.pdfIn PDF document text
    • http://files.bluedevilpits.com/uploads/1/3/1/6/131606309/a642f0e7e.pdfIn PDF document text
    • http://files.horperwielen.nl/uploads/1/3/0/8/130814297/7747337.pdfIn PDF document text
    • http://wakutos.robyngraycounseling.com/uploads/1/3/1/3/131398101/8cc70.pdfIn PDF document text
    • http://sidokoz.cutthecord.us/uploads/1/3/1/0/131070851/be2be553c.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/1/0483/5485/3027/files/types_of_chemical_reactions_answer_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2120/5145/files/vpn_hotspot_apk_xda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/7853/7382/files/gitejodune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6095/5809/files/a_skeleton_key_to_finnegans_wake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8085/1364/files/change_revision_date_in_revit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/262a6fec-c98c-4d89-9b1c-0c7d667a3a60/77937607320.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3de13b68-29cd-4c26-bbe6-ce313169cf17/gejosuxofivif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf667109-376e-4612-9036-aa73abe30a79/33677275844.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6eed69be-9ce5-49be-b32d-9e0bac15d7a3/valovaronotokofuditukabe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9c57de9-714f-4274-a34b-13968694ddca/takapugiw.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 3

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_off00006fd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD5 5108 bytes
SHA-256: b33c16c0890cf89b44ce64edc94b60dfd21ef0d1d9b4cea98e10a8c780a2b3bd
font_01_sfnt_off00008155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8155 9992 bytes
SHA-256: a7f626e7188f9327af83f7446e96ed02e88cca8e560b4bf45bd9cb3b19a394df

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