Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc00bb40e3a2733…

MALICIOUS

PDF

65.7 KB Created: 2020-11-05 22:40:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 3f378101b2821c064d1a1ddc7380d844 SHA-1: ac0e517fed754ef906a197382439f8abd809f2b0 SHA-256: 1dc00bb40e3a273365154c4ffd4025cdc922d324dec588e5f604edcabe558ba6
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://traffine.ru/strik?keyword=danganronpa+ultra+despair+girls+characters In PDF document text
    • https://lowizozexide.weebly.com/uploads/1/3/0/7/130776176/sukurizitoxoxa_waxezag_wogoxofa_subetexenezo.pdfIn PDF document text
    • https://nutefowamedez.weebly.com/uploads/1/3/4/3/134330341/a5bf877bea23.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/28f4d.pdfIn PDF document text
    • https://lebidupevi.weebly.com/uploads/1/3/4/3/134319251/1661323.pdfIn PDF document text
    • https://kawigijutugin.weebly.com/uploads/1/3/4/3/134351661/natofebobemu-xutiputawiloje.pdfIn PDF document text
    • https://tabuxeniki.weebly.com/uploads/1/3/2/6/132682737/kazop_zomizenipik.pdfIn PDF document text
    • https://fiselowozol.weebly.com/uploads/1/3/4/3/134366189/riboxemukodudiba.pdfIn PDF document text
    • https://repafajekojila.weebly.com/uploads/1/3/4/3/134305679/7ddb5de7a619a.pdfIn PDF document text
    • https://xoxajunun.weebly.com/uploads/1/3/4/3/134351876/vojukaruwudivure.pdfIn PDF document text
    • https://dudikojegak.weebly.com/uploads/1/3/1/4/131406444/motelekofafewoz.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://s3.amazonaws.com/legenapi/alexa_riley_read_online_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa50e0e4-b834-4cc8-ae61-b812a75fcaa6/gafekuves.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/50682299334.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7c12017-9f26-445a-b77d-49ec32add03a/jasedivimojilaje.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000984f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x984F 8236 bytes
SHA-256: 99d0a794ee963a79ca50f4c52de440ba96c56f35e2afc9ba95bec13c227294ab
font_01_sfnt_off0000b354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB354 5216 bytes
SHA-256: 8b5ca2714ef781ff2ea2ad2a59c90236685c874b66175529d0053d5b3dfa4ef5
font_02_sfnt_off0000c506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC506 12080 bytes
SHA-256: 56819a84cb8ed19fb6d0145063150944489861b21cf8dac4a8d75cb97d2b0d46
font_03_sfnt_off0000ead5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD5 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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