Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb4de4fa89d195eb…

MALICIOUS

PDF

124.1 KB Created: 2022-06-12 16:30:45 +02:00 Authoring application: vigwai (via PDF Master 1.0.1) First seen: 2022-07-15
MD5: b5f0d1815f86908efd4b13999a388b50 SHA-1: 57ef349dad62925c5f92376f604d4049ba06e2eb SHA-256: cb4de4fa89d195eb5a308c6cd22c9d2c7c79eb12ae5af3363aa01f95d92b8f36
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which point to cracked software or potentially malicious files. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and 'PDF_CRACKED_SOFTWARE_LURE' confirms the nature of some of these links. The embedded URL 'http://evacdir.com/larvicide.exisitng?ZG93bmxvYWR8UHg1YUhSbWNYeDhNVFkxTkRrNE9URTJNbng4TWpVNE4zeDhLRTBwSUVobGNtOXJkU0JiUm1GemRDQkhSVTVk=/guttate/S2luZW1hdGljcyBBbmQgRHluYW1pY3MgT2YgTWFjaGluZXJ5IEJ5IFJsIE5vcnRvbiBTb2x1dGlvbiBNYW51YWwS2l.bronchoscopy&peppery=playwriting' is likely a download URL for a second-stage payload.

Machine Learning

  • Nyx PDF Classifier clean score 0.0206

Heuristics 4

  • 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.
  • 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://evacdir.com/larvicide.exisitng?ZG93bmxvYWR8UHg1YUhSbWNYeDhNVFkxTkRrNE9URTJNbng4TWpVNE4zeDhLRTBwSUVobGNtOXJkU0JiUm1GemRDQkhSVTVk=/guttate/S2luZW1hdGljcyBBbmQgRHluYW1pY3MgT2YgTWFjaGluZXJ5IEJ5IFJsIE5vcnRvbiBTb2x1dGlvbiBNYW51YWwS2l.bronchoscopy&peppery=playwriting PDF link annotation
    • http://goldeneagleauction.com/?p=35323In PDF document text
    • http://www.sparepartsdiesel.com/upload/files/2022/06/jpE4DgguhcR4pOYx2xT9_12_dc3916c26c06cfae332c41458a4ad6fa_file.pdfIn PDF document text
    • https://flaxandthimble.com/wp-content/uploads/2022/06/advled.pdfIn PDF document text
    • https://isispharma-kw.com/les-sims-3-toutes-les-extensions-crack-extra-quality/In PDF document text
    • http://www.bigislandltr.com/wp-content/uploads/2022/06/Gta_Iv_No_Se_Encuentra_El_Ordinal_42_Xlivedll.pdfIn PDF document text
    • https://www.podiumrakyat.com/autocad-2009-keygen-32-bit-download-work/In PDF document text
    • https://blagik.com/wp-content/uploads/2022/06/DeskBabes_Full_Models_2012torrenttorrenttorrent.pdfIn PDF document text
    • https://www.chesapeakemarineinst.com/animal-diversity-hickman-pdf-download-work/In PDF document text
    • https://cristianosencontacto.com/wp-content/uploads/2022/06/Chip_And_Dale_Dublat_Romana_HOT.pdfIn PDF document text
    • https://fermencol.ru/wp-content/uploads/2022/06/marfab.pdfIn PDF document text
    • http://www.sparepartsdiesel.com/upload/files/2022/06/JqNrhY2fKklOyXb9N5lb_12_dc3916c26c06cfae332c41458a4ad6fa_file.pdfIn PDF document text
    • https://iptvpascher.com/wp-content/uploads/2022/06/crack_see_electrical_expert_v4.pdfIn PDF document text
    • https://stinger-live.s3.amazonaws.com/upload/files/2022/06/WGTgx6eVczm6EeLxzeEu_12_8b4ad8c6158de3b1d76f4ac0c95ae9f3_file.pdfIn PDF document text
    • https://lots-a-stuff.com/az-arial-azlat-fonts/In PDF document text
    • https://www.greenipcore.com/wp-content/uploads/2022/06/daim_iqbal_daim_poetry_books.pdfIn PDF document text
    • https://houstonhousepc.com/sims-3-sex-mods/In PDF document text
    • https://imoraitilaw.com/sp-drivers-v1-5-download/In PDF document text
    • https://silkfromvietnam.com/kapita-selekta-kedokteran-ebook-20-verified/In PDF document text
    • https://www.palpodia.com/upload/files/2022/06/nbEaP7j7xJlvyoyHc3FM_12_dc3916c26c06cfae332c41458a4ad6fa_file.pdfIn PDF document text
    • https://himoin.com/upload/files/2022/06/aRfq9uuQyUIrUeTk9Zxp_12_dc3916c26c06cfae332c41458a4ad6fa_file.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00000ec9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xEC9 120140 bytes
SHA-256: a217f12862e0ff75203bdd4136ca0d68471050be46bb09aed5306898926ffdd4

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