Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 4e7d8b4db03b2236…

MALICIOUS

PDF / .VIR

149.7 KB Created: 2022-06-08 06:26:55 +02:00 Authoring application: blefert (via PDF Master 1.0.1) First seen: 2024-09-20
MD5: 7f7d63988c78d6b2203d698adf90eaf4 SHA-1: 93a9a01200799019db1573b4931a945feb17576b SHA-256: 4e7d8b4db03b2236fc6e4685b28771db21bb0642f19dfb66f05d32ee7639ab7e
204 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0005

Heuristics 7

  • Cracked-software lure uses shortlink/download gateway critical PDF_CRACKED_SOFTWARE_SHORTLINK_LURE
    PDF visible text advertises a crack, serial number, archive, or pirated-software download and pairs it with a shortlink or encoded download gateway. This is a high-confidence social-engineering carrier for unwanted software or droppers; the PDF itself is not a parser exploit.
  • Cracked-software lure uses download-gateway redirectors high PDF_CRACKED_SOFTWARE_REDIRECTOR_LINK_FARM
    PDF contains multiple cracked-software/keygen/serial-key lure links together with long encoded download-gateway URLs or known crack-download redirector hosts. This is stronger than generic piracy vocabulary: the document is an SEO lure that funnels users through redirect/download infrastructure commonly used for adware, unwanted software, or droppers.
  • PDF links to a cracked-software download doorway (base64-obfuscated) high PDF_CRACKED_SOFTWARE_DOWNLOAD_DOORWAY
    PDF's embedded link hides a pirated-software title as a base64 blob inside the URL path/query (and/or carries the ``download|`` doorway-template marker), rather than in visible text. This is a TCPDF-generated SEO doorway that ranks for software-piracy searches and funnels users to fake 'crack/keygen' download pages distributing adware, potentially-unwanted programs, or droppers. The base64 encoding is deliberate obfuscation to evade plaintext lure rules; the PDF itself carries no parser exploit — the risk is the linked crack-download destination.
  • 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.
  • 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.
  • 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://evacdir.com/ativan/ZG93bmxvYWR8cEsxWW5OeGVIeDhNVFkxTkRZME16TTFNSHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA.castellano?Tm9JQ0UTm9/lignin/recurve/concealing PDF link annotation
    • https://ameppa.org/wp-content/uploads/2022/06/carotha.pdfIn PDF document text
    • https://www.beatschermerhorn.com/?p=3399In PDF document text
    • http://www.gambians.fi/synergyview-mac-win/healthy-diet/In PDF document text
    • https://thesciencestations.com/wp-content/uploads/2022/06/YASW__Crack___Keygen_MacWin_2022_New.pdfIn PDF document text
    • https://pharmatalk.org/upload/files/2022/06/tyBBwKLW5qKeqKcmCXEF_08_8482530d865f151aaff56cf8ebb310c7_file.pdfIn PDF document text
    • http://www.hva-concept.com/minicoder-crack-latest/In PDF document text
    • http://nmcb4reunion.info/wp-content/uploads/2022/06/PdfGrabber.pdfIn PDF document text
    • https://www.realteqs.com/teqsplus/upload/files/2022/06/2BWNV2kfBfqXhHOcFRZj_08_445fbab68a326462dda0c95839e46b11_file.pdfIn PDF document text
    • https://restaurantfinderplus.com/wp-content/uploads/2022/06/Microsoft_Locale_Builder__Crack_Activation_Code_Download_WinMac.pdfIn PDF document text
    • https://ameeni.com/upload/files/2022/06/aJpVaTdvduqZhXh3xmZd_08_a6d1d88127539b6b9b76bfaf1de5559f_file.pdfIn PDF document text
    • http://www.enriquetabara.com/wp-content/uploads/2022/06/CloudShot_Portable.pdfIn PDF document text
    • https://2figureout.com/email-grabber-crack-product-key-for-pc-april-2022/In PDF document text
    • https://factorybraga.com/wp-content/uploads/2022/06/PdfGrabber.pdfIn PDF document text
    • https://sunuline.com/upload/files/2022/06/wnwGB9FgozpQpnc3eGqB_08_4845a852257cd6e59171b464eff4df9f_file.pdfIn PDF document text
    • https://www.studiobiasco.com/wp-content/uploads/2022/06/valecol.pdfIn PDF document text
    • https://ghiassets.com/advert/flow-analog-clock-crack-free-download-final-2022/In PDF document text
    • https://www.endtoendhrsolutions.com/wp-content/uploads/2022/06/scopal.pdfIn PDF document text
    • https://elstruplaug.dk/wp-content/uploads/Discovery.pdfIn PDF document text
    • http://geniyarts.de/?p=3701In PDF document text
    • https://thesciencestations.com/wp-In PDF document text
    • https://pharmatalk.org/upload/files/2022/06/tyBBwKLW5qKeqKcmCXEF_08_8482530d865f151aaff56cIn PDF document text
    • https://www.realteqs.com/teqsplus/upload/files/2022/06/2BWNV2kfBfqXhHOcFRZj_08_445fbab68a326In PDF document text
    • https://restaurantfinderplus.com/wp-In PDF document text
    • https://ameeni.com/upload/files/2022/06/aJpVaTdvduqZhXh3xmZd_08_a6d1d88127539b6b9b76bfaf1deIn PDF document text
    • https://sunuline.com/upload/files/2022/06/wnwGB9FgozpQpnc3eGqB_08_4845a852257cd6e59171b464eIn PDF document text
    • http://evacdir.com/ativan/zg93bmxvywr8cesxww5oegviedhnvfkxtkrzme16ttfnshg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda.castellano?tm9jq0utm9/lignin/recurve/concealingIn 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00002d29.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D29 120140 bytes
SHA-256: a217f12862e0ff75203bdd4136ca0d68471050be46bb09aed5306898926ffdd4
stream_012_off0001ceb9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1CEB9 119072 bytes
SHA-256: df221e87b81d1531cafdadb6c09a602e9f604d1baf0a17bbd350cbb83baa06f7
font_01_sfnt_off0000db0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB0C 76772 bytes
SHA-256: 07ce6fea3c98bf59133021be55ce9147f9c26365efe580a2a4f82130ca697f54