Malicious PDF — malware analysis report

Static analysis result for SHA-256 922ffe0445d3ef3c…

MALICIOUS

PDF

46.7 KB Created: 2020-10-08 00:03:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 03dd7baaa80301efe5cee3861a0fb761 SHA-1: 536fc556d3b81b0383a561d75da7a8cba334376a SHA-256: 922ffe0445d3ef3c2139a0c675b864b879b5649397ce416f68a6d10978bbb4a1
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=bootstrap+4+documentation+pdf+free+download In PDF document text
    • http://files.willwayjourneys.com/uploads/1/3/1/4/131406453/rujizivitixa_sopula_fazuvovuj_gufurisememuf.pdfIn PDF document text
    • http://files.stjeanvianneyschool.org/uploads/1/3/0/7/130775837/28f6893.pdfIn PDF document text
    • http://files.mayfieldfamilyeyecare.com/uploads/1/3/0/7/130739081/e6201.pdfIn PDF document text
    • http://zokawito.bostonmedstaffing.com/uploads/1/3/0/8/130874642/togewe.pdfIn PDF document text
    • https://site-1040145.mozfiles.com/files/1040145/xasivaraguxe.pdfIn PDF document text
    • https://site-1037833.mozfiles.com/files/1037833/11893605372.pdfIn PDF document text
    • https://site-1036971.mozfiles.com/files/1036971/47238390500.pdfIn PDF document text
    • https://site-1037265.mozfiles.com/files/1037265/13174695551.pdfIn PDF document text
    • http://files.beyondthebrainlearning.com/uploads/1/3/1/4/131407968/boburi.pdfIn PDF document text
    • http://jaxulon.buildvaluehere.com/uploads/1/3/1/8/131856166/c7084b.pdfIn PDF document text
    • http://files.swhtambulance.org/uploads/1/3/0/7/130739452/f7b4401327b141d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2a6ebfc4-9aba-4209-9686-83a5f9b8ca54/90289548646.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cd68261-62b9-4df7-a2e3-4769c46aca1d/baxoririsulojefege.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b971d31d-5242-41fc-afbf-5b98842181aa/116947826.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2add5fb9-5df8-41c4-b8bc-d7d3490f4ffb/tixusopabilimedokumiguti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4ba457a-071d-453f-a0a4-c9ac4dd2bd96/kuretamuzerilewi.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 7

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_off00006136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6136 5412 bytes
SHA-256: 30db3d5acb2389057f991fd2b4b0f8e8f36b3d024b8704e6e0cbce2c46c07aaa
font_01_sfnt_off00007398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7398 13844 bytes
SHA-256: 6cd1e24b477b8a0c093e246621ba86476482c3913626356d6eb9ed39bca1d08d
font_02_sfnt_off00009f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F66 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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