Malicious PDF — malware analysis report

Static analysis result for SHA-256 23c774587a82e2a0…

MALICIOUS

PDF

39.8 KB Created: 2020-10-04 07:20:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 80dea2bd7752e54a10c53a925784b86c SHA-1: b261b4c3eb096efd25e0b24ce21d9b1b0bbb6234 SHA-256: 23c774587a82e2a0dc7b92abd3997ca9b55b450f80ebcbddf2f574185870a007
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://ttraff.me/pify?keyword=hot+tub+removal+near+me In PDF document text
    • http://jomarotun.denmantdc.com/uploads/1/3/1/4/131454065/nuxutuvipaxiv-kumomur.pdfIn PDF document text
    • http://runebirum.connectionsgifu.com/uploads/1/3/1/4/131453046/3233219.pdfIn PDF document text
    • http://files.aircoservicehb.com/uploads/1/3/2/6/132682441/zakugowunifupad_xetisofekofuwop_gefeto_punugixoliwan.pdfIn PDF document text
    • http://files.drtyroneholmes.com/uploads/1/3/0/7/130775529/36f709.pdfIn PDF document text
    • https://site-1036820.mozfiles.com/files/1036820/91500058385.pdfIn PDF document text
    • https://site-1039597.mozfiles.com/files/1039597/20549111724.pdfIn PDF document text
    • https://site-1042590.mozfiles.com/files/1042590/60039100735.pdfIn PDF document text
    • https://site-1039617.mozfiles.com/files/1039617/nosupuponowupafodora.pdfIn PDF document text
    • https://site-1037177.mozfiles.com/files/1037177/judabisolajan.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/6f578187-9077-410b-8ed5-7bebcf1de649/forepabejowiwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffcf0db2-0a31-4709-9163-140a1ee0dd42/tipilalakibakowaleji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57f16f9e-8e78-4a1b-97d4-bcb231d081de/90641510285.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/269ea1f2-8151-438e-b3a1-419284ad603f/dataxavu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12fa8c22-86e9-44c0-b162-a1ab41f3ab29/60957301270.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da6a457b-0edf-4591-bac9-49d20a1030ce/83678345504.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F0F 4816 bytes
SHA-256: 8e8a2d9cb53c4003a090d1a2ed66a8ffb6dc15ccfc6c4e4af9f82fa15ef45fb7
font_01_sfnt_off00006f56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F56 10340 bytes
SHA-256: 6a839d23b33913f5d1dae04a9773f8f92ec56b0e1d9d57f50b1ebbedfd349a36