Malicious PDF — malware analysis report

Static analysis result for SHA-256 5be161920e689563…

MALICIOUS

PDF

55.2 KB Created: 2020-10-06 17:56:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8c7caf3161fcabdb16b2cde6494349ef SHA-1: b57106a993c4b2a0bddbf12fe0913bc1356bb660 SHA-256: 5be161920e6895639f8b708edb8f8d1318e4e3ce150d6d27178542fdbbfea5eb
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://gettraff.ru/strik?keyword=icc+cricket+world+cup+2018+game+download+for+pc In PDF document text
    • https://site-1038840.mozfiles.com/files/1038840/kusila.pdfIn PDF document text
    • https://site-1036851.mozfiles.com/files/1036851/jofesufufufoli.pdfIn PDF document text
    • https://site-1044417.mozfiles.com/files/1044417/tugama.pdfIn PDF document text
    • https://site-1036796.mozfiles.com/files/1036796/40141831138.pdfIn PDF document text
    • https://site-1037266.mozfiles.com/files/1037266/70179412552.pdfIn PDF document text
    • http://files.longbayyouthsymphony.org/uploads/1/3/1/3/131383748/loxiketokewezuxuwiva.pdfIn PDF document text
    • http://ridenules.flushingfutbolacademy.com/uploads/1/3/1/3/131379554/190df7.pdfIn PDF document text
    • http://tuxarin.draustinsaysso.com/uploads/1/3/1/4/131454057/6447844.pdfIn PDF document text
    • http://fumoz.markalsop.com/uploads/1/3/1/3/131380213/rasosexiw.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/0a7a2d8d-b0cf-4b3b-a97e-964771f0fd53/86755278186.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/213b3c52-47ab-4557-a63a-ec0ed4bfa762/42241425837.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccbaf43a-9462-47bb-90cd-de07708ed465/lurimifujaboropafuxim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e4240c2-5b04-4231-9d46-e940f96ad2b1/81223454915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/4866/8836/files/average_speed_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3461/3659/files/riwozaj.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000080e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E6 5908 bytes
SHA-256: c991193a4d6540a955ad8f258af5df738aae461f62517ffa1c3e2a8cf9a4810e
font_01_sfnt_off00009511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9511 10328 bytes
SHA-256: a75ed40261f9958b63e64357e36f6839b7dcff93eb3bc4b9389f81456d6d7dae
font_02_sfnt_off0000b893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB893 16664 bytes
SHA-256: b33a4224693e4c431bfdba72241c248961bac5c6a9114d44ecd93ee6f8b9163a

Open this report in the interactive analyzer, or submit your own file for analysis.