Malicious PDF — malware analysis report

Static analysis result for SHA-256 27034ba8d1f3637f…

MALICIOUS

PDF

117.6 KB Created: 2022-07-08 00:07:15 +00:00 Authoring application: briber (via PDF Master 1.0.1) First seen: 2022-07-15
MD5: fb456ae37b90e6bc70c7b0484624d930 SHA-1: 5c8de03508b25ef2763cd5d1b7d90eecb247c6c0 SHA-256: 27034ba8d1f3637f39a238f7397b41cb0aedee69d76649d7aa29e4e73dbc8604
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a link farm that advertises cracked and pirated software, indicating a lure to trick users into downloading potentially malicious files. The presence of multiple external URIs, including one pointing to an IP address, and the specific heuristic 'PDF_CRACKED_SOFTWARE_LURE' strongly suggest this malicious intent. The document body was unreadable, but the heuristics and URLs are sufficient for this assessment.

Machine Learning

  • Nyx PDF Classifier clean score 0.0073

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF link farm advertises cracked/pirated software medium PDF_CRACKED_SOFTWARE_LURE
    PDF contains many clickable links whose targets use cracked-software, keygen, serial-key, or warez vocabulary. These are SEO-spam lure documents that rank for software-piracy searches and route users to fake 'crack' download pages distributing potentially-unwanted programs, adware, or droppers. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://xtraserp.com/ncoa/blast.cheapens/grebe/lakhs/Qmx1ZXNvbGVpbCA5LjIuNDIyLjEga2V5Z2VuQmx/retail.ZG93bmxvYWR8cEQ0T1RRMGEzeDhNVFkxTnpFNE5qazFOWHg4TWpVM05IeDhLRTBwSUhKbFlXUXRZbXh2WnlCYlJtRnpkQ0JIUlU1ZA.penicillamine PDF link annotation
    • https://www.northyarmouth.org/sites/g/files/vyhlif1006/f/uploads/curbside_pickup_schedule1.pdfIn PDF document text
    • https://www.emitpost.com/wp-content/uploads/2022/07/marksabr.pdfIn PDF document text
    • https://www.dominionphone.com/download-driver-lan-g41d3lm-new/In PDF document text
    • https://www.dominionphone.com/wp-content/uploads/2022/07/ragnarok_guild_emblems_download.pdfIn PDF document text
    • http://www.delphineberry.com/?p=17499In PDF document text
    • https://natepute.com/advert/agisoft-photoscan-1-4-5-license-key-install-2/In PDF document text
    • https://romans12-2.org/wp-content/uploads/2022/07/windows_7_ice_extreme_v1_crack.pdfIn PDF document text
    • https://ex0-sys.app/upload/files/2022/07/IzqriKBStazMTPypKjPZ_08_732b87f5404d5c711de9ca3ecfa13fd2_file.pdfIn PDF document text
    • http://bookmanufacturers.org/charlie-and-the-chocolate-factory-movie-in-teluguIn PDF document text
    • https://www.atlaspain.it/kaspersky-reset-trial-5-1-0-41-update-_top_-129311/In PDF document text
    • https://threepatrons.org/news/pinoytalismanonlinebotbetter-download/In PDF document text
    • https://mandarinrecruitment.com/system/files/webform/couglyn832.pdfIn PDF document text
    • https://wozyzy.com/upload/files/2022/07/92mVHZ6J1DtJlStOzi4u_08_3cdff5ced8df88e4680d128aeca4f60c_file.pdfIn PDF document text
    • https://tgmcn.com/kedareswara-vratham-telugu-book-pdf-free-download-hot/In PDF document text
    • https://www.linkablecity.com/wp-content/uploads/2022/07/quaabig.pdfIn PDF document text
    • https://ilsignoredicampagna.it/100-obras-maestras-de-la-musica-clasica-descargar-torrent-verified/In PDF document text
    • http://3.16.76.74/advert/etabs-18-1-crack-with-full-torrent-2020-latest-patched/PDF link annotation
    • https://theborejan.com/keygen-fixed-autocad-mobile-2014-64-bits-ingles/In PDF document text
    • https://ex0-sys.app/upload/files/2022/07/IzqriKBStazMTPypKjPZ_08_732b87f5404d5c711de9ca3ecfa13fd2In PDF document text
    • https://wozyzy.com/upload/files/2022/07/92mVHZ6J1DtJlStOzi4u_08_3cdff5ced8df88e4680d128aeca4f60cIn PDF document text
    • https://emealjobs.nttdata.com/en/system/files/webform/pst-walker-license-keygen-download100.pdfIn PDF document text
    • https://ebiketips.road.cc/system/files/webform/wallmars771.pdfIn PDF document text
    • http://www.tcpdf.orgIn 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/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text
🗂 Part of campaign: secureserver.net 1471 samples