Malicious PDF — malware analysis report

Static analysis result for SHA-256 59699525fe6948fd…

MALICIOUS

PDF

45.8 KB Created: 2020-10-02 14:19:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 604a7589dd289fd0086b73e143c6768a SHA-1: d9a6d76ea8701a2251cb389f48a0a3f618a32f90 SHA-256: 59699525fe6948fd43f3a25e0ba579e507596f5d4a8dfd3b6d7ce14fdd71cea7
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=auto+salvage+montgomery+al In PDF document text
    • https://site-1040427.mozfiles.com/files/1040427/38182206077.pdfIn PDF document text
    • https://site-1036973.mozfiles.com/files/1036973/73232417026.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/97695645115.pdfIn PDF document text
    • https://site-1037238.mozfiles.com/files/1037238/tomikedize.pdfIn PDF document text
    • https://site-1039148.mozfiles.com/files/1039148/68779730527.pdfIn PDF document text
    • https://site-1039280.mozfiles.com/files/1039280/sewukibo.pdfIn PDF document text
    • https://site-1037882.mozfiles.com/files/1037882/12217396916.pdfIn PDF document text
    • https://site-1038413.mozfiles.com/files/1038413/47505530256.pdfIn PDF document text
    • https://site-1037202.mozfiles.com/files/1037202/digukegitoxusig.pdfIn PDF document text
    • https://site-1037082.mozfiles.com/files/1037082/kepafuzamijep.pdfIn PDF document text
    • http://files.mobileweldingservice.co/uploads/1/3/1/3/131379894/dagan_rekez_jusuxosoterowor_nakomikofatet.pdfIn PDF document text
    • http://files.chapman-bond-chatman.org/uploads/1/3/1/4/131409309/nowovijavejub.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/698e3453-3d64-4c0b-962a-1806b07a6dfb/79576698700.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f7d7f85-d0b0-4314-a81f-927dc7cc6f4e/24866278120.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c69d8471-356e-47c0-8f77-1be39c75e5dc/62541276856.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9735719-2ae2-4f69-a974-892c5d7ade2a/dojegokag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a02dded-16f1-48bc-b8b8-caa120e02a01/fojafof.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B8 4992 bytes
SHA-256: d5249d9b31132bc1f1802bb5a7d26cd203cf916f35f7a6e75c35e17d184710a8
font_01_sfnt_off000079a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A5 10140 bytes
SHA-256: 88012766af72b3d2af5a0f3d5224e22afd64a16b857604c2cacdae2f54b9b4a5
font_02_sfnt_off00009c18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C18 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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