Malicious PDF — malware analysis report

Static analysis result for SHA-256 45c32c586a2df72a…

MALICIOUS

PDF

74.0 KB Created: 2021-06-07 07:32:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: a7a7dbf3d8562409a26fbff458c5762c SHA-1: 056c1b56f593bff4f06df245f30ac7f899a9de72 SHA-256: 45c32c586a2df72a80e46f0bc387199658fcc239f8369dfbbb7cd0b024ec0a5a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. The PDF contains numerous embedded links, many pointing to disposable hosting, suggesting a link farm or phishing attempt. The document body, though heavily obfuscated, contains text related to 'project charter pmp' and the authoring application 'wkhtmltopdf', which may be part of a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • 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://irlanc.ru/pbw?utm_term=what+is+included+in+project+charter+pmp PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4414339/normal_5ff3e82d68ab2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367944/normal_60bd0dce27dc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414166/normal_602efe33aa5f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4531523/normal_601dd0cfabe7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485579/normal_60309c6380b3f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481408/normal_6008b5a4633f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464070/normal_6016c5212ddc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468819/normal_6026ca3324910.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4528780/normal_5fde2dcbc43e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446273/normal_5ff09ca09a672.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480598/normal_600776dc53179.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4528780/normal_5fff14c86463b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495390/normal_60bc8ff1df4ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409992/normal_6024cd382d0c3.pdfIn PDF document text
    • https://pmp-practitioners.com/pIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rimikupababo.pbworks.com/w/file/fetch/144546144/new_punjabi_love_ringtone_2020_download_mp3.pdfIn PDF document text
    • http://zuvuzut.pbworks.com/w/file/fetch/144574494/wogenajekinobufab.pdfIn PDF document text
    • http://dibesusajob.pbworks.com/w/file/fetch/144721650/filmywap_bollywood_movies_2016_hd_download.pdfIn PDF document text
    • http://zanikofepaj.pbworks.com/w/file/fetch/144716730/insinkerator_badger_333_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/480aca3f-0394-4170-bce0-12d2456b9258/juegos_del_hombre_araa_besos_en_la_cama.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e0a9055-8c1b-45bb-90ff-65a6e8865b82/kelagarewipelabefito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdcc7006-3092-4c4e-957f-b5fe8218d02b/tokyo_ghoul_anime_season_2_plot.pdfIn PDF document text
    • http://tarogifere.pbworks.com/f/wepuwexos.pdfIn PDF document text
    • http://lopofemusun.pbworks.com/w/file/fetch/144559767/65294651452.pdfIn PDF document text
    • http://sepaxebi.pbworks.com/w/file/fetch/144413208/litesabosidasuguze.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F7 5404 bytes
SHA-256: 2e0f6897685d2840138ecb564127af6ffa30e43a4b24b1478d8af16aa26c43bb
font_01_sfnt_off0000f437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF437 11152 bytes
SHA-256: 7355cb63f1e3427614348ef3902da8ae096b8a4164d2aaaa82c21e58c19dbc84