Malicious PDF — malware analysis report

Static analysis result for SHA-256 01c6312eee60be8c…

MALICIOUS

PDF

43.3 KB Created: 2020-10-07 11:44:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 373f9f0b4fb493380c06ad49187fc70e SHA-1: e62c1c6c36275e05b573afa78fb2168b0fffdf61 SHA-256: 01c6312eee60be8c557ba7fc1f79f8fdfdd84712fa05005fa894607708dc6dc5
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://ttraff.club/pify?keyword=north+oldham+middle+school+website In PDF document text
    • http://files.bodtkergolftour.com/uploads/1/3/1/4/131407406/2647409.pdfIn PDF document text
    • http://files.bishopgumbleton.com/uploads/1/3/1/3/131379371/tokasinipegog.pdfIn PDF document text
    • http://jamaj.theopenbus.com/uploads/1/3/2/6/132683138/vamusedejagi.pdfIn PDF document text
    • http://bizevofe.sugar-dreams.com/uploads/1/3/1/8/131858540/nuduzedudujabem.pdfIn PDF document text
    • http://files.biophysical-ecology.com/uploads/1/3/1/4/131406356/xivut_girusidusowele_finusagon.pdfIn PDF document text
    • https://site-1036744.mozfiles.com/files/1036744/wupaluvovive.pdfIn PDF document text
    • https://site-1036661.mozfiles.com/files/1036661/gobefosunafekipabozoxula.pdfIn PDF document text
    • https://site-1037069.mozfiles.com/files/1037069/golafajekonupesa.pdfIn PDF document text
    • http://files.ydapartments.com/uploads/1/3/1/4/131454114/zibamojuxenora.pdfIn PDF document text
    • http://files.northernvoices.com.au/uploads/1/3/1/4/131410187/noleduzeguvetusumaz.pdfIn PDF document text
    • http://files.ultraspeedracing.net/uploads/1/3/0/7/130739027/vikatukivitinunuviv.pdfIn PDF document text
    • https://site-1036872.mozfiles.com/files/1036872/84510894995.pdfIn PDF document text
    • https://site-1036929.mozfiles.com/files/1036929/musoruzibazijunajivolas.pdfIn PDF document text
    • https://site-1037160.mozfiles.com/files/1037160/29284809765.pdfIn PDF document text
    • https://site-1037240.mozfiles.com/files/1037240/rusenivudunoxeveziga.pdfIn PDF document text
    • https://site-1039735.mozfiles.com/files/1039735/17033520501.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00006ae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE8 5380 bytes
SHA-256: 411a0a8d500ebc06b58d8537956cb1719a2fd5062d29b983f201f054ef843b90
font_01_sfnt_off00007d19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D19 10192 bytes
SHA-256: c2863ec11d9557d63ff50aafc275c5ed50aad9b8f583d99bd93393b186e9572f