Malicious PDF — malware analysis report

Static analysis result for SHA-256 49d352b9bb5be295…

MALICIOUS

PDF

44.0 KB Created: 2020-09-30 16:44:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d29f4adc1b3939d307e2b684e31018e9 SHA-1: bb8a9e381cd8bb5908fcd6d94e36207f8ae0e797 SHA-256: 49d352b9bb5be295d2c25d61f4f4747282dd41e3322042285f1f81a54171e974
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=all+the+lovely+bad+ones+pdf In PDF document text
    • http://files.brodyquixote.com/uploads/1/3/2/6/132695576/cd6533d.pdfIn PDF document text
    • http://files.2ourhealth.net/uploads/1/3/1/4/131453592/gavavimaripibalu.pdfIn PDF document text
    • http://burar.brushlove.ca/uploads/1/3/1/3/131398252/a1449382fdf3d.pdfIn PDF document text
    • http://misad.womenofmiramichi.com/uploads/1/3/1/4/131407316/1646138.pdfIn PDF document text
    • http://files.lifecoachonline.ca/uploads/1/3/2/6/132682655/bupibolubexegaped.pdfIn PDF document text
    • https://site-1036982.mozfiles.com/files/1036982/nolegufofunojuradatofawat.pdfIn PDF document text
    • https://site-1037261.mozfiles.com/files/1037261/61965913084.pdfIn PDF document text
    • https://site-1037267.mozfiles.com/files/1037267/vazodibenod.pdfIn PDF document text
    • https://site-1036920.mozfiles.com/files/1036920/tugaju.pdfIn PDF document text
    • https://site-1036627.mozfiles.com/files/1036627/47857265550.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/3352215b-2e23-43bc-942a-e2cb33fa4554/lukoxufibogokevenelumode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad469120-6a7d-4211-849f-b638423a8d49/xopawiwased.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1280e0b8-38a2-4f9f-8f8a-9ba70a8c5d28/depedaxafebexobotodafo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97398956-ff26-474a-9111-bb3e6f626039/bikobo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2fcdfef-c828-4bfe-a155-7bf607308375/fikujedutavotulukiseso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cffea67-c3eb-4c42-a292-81dcb67753d5/66149048859.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54644563-2357-4986-a65a-8f19f6dc80d5/86042210595.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ab61934-043a-4d5a-9249-0e142ef3026c/jukatasibeviwoxew.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_off00006d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6F 5324 bytes
SHA-256: 62f36d7fa81bcf0a9f23cdb40afaeda6653c4efdf0e2ffd745812bad4a6a3310
font_01_sfnt_off00007f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F92 10380 bytes
SHA-256: 00d520bcffb6e9a942e812e4c76e4f6232cb46d7e6ae744295394aabdad12659

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