Malicious PDF — malware analysis report

Static analysis result for SHA-256 bee9c2ca09d98438…

MALICIOUS

PDF

93.6 KB Created: 2021-07-17 14:31:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: f04d96f7abd7a76a4e906ee738857598 SHA-1: a9ced1c4600051cdfc6ad64b9b36c5b4ebf6c901 SHA-256: bee9c2ca09d98438d28608165e22ead818679d1b395cb69025d57e5ba997461d
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple websites, some of which appear to be compromised CMS uploads, suggesting a phishing or malware distribution lure. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway scanning. While no scripts were directly extracted, the PDF structure and URL patterns are consistent with malicious document delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. 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
  • 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 http://www.anclupnapoli.it/userfiles/file/pogewepik.pdf In PDF document text
    • http://baybayankaauamo.com/clients/c/c9/c9e0f772d4a556598cfa564a27137582/File/tozexiwifumebil.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d911c05ee0---runexavusitifofasebit.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/dba7713f1284ae5e88621b7be14d1bdd/warixi.pdfIn PDF document text
    • http://ballarioarchitetti.eu/userfiles/files/kikezunerili.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec3629ee6c---fajejatafebudem.pdfIn PDF document text
    • http://www.tlo.ntou.edu.tw/ckfinder/userfiles/files/27692142585.pdfIn PDF document text
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/160986380c2b72---pemexori.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3a8be48f2b---xowakijexade.pdfIn PDF document text
    • https://planet-for-events.de/userfiles/file/nujupijeberugikimikikes.pdfIn PDF document text
    • http://analogsys.com/uploaded/file/8745291260a06df3a876c.pdfIn PDF document text
    • http://coinproject.com/userfiles/image/file/55345344843.pdfIn PDF document text
    • http://gingerbreadvillage.org/clients/e/e3/e396b250b60561adcb946853f9f62e29/File/59953815907.pdfIn PDF document text
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/bd33edbaa3a63e24e9529ef26ac24f72/papinezuladonazinesulov.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb5d750654---megexatupafapopizajila.pdfIn PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/1a744e0073978299f64d91ef9b7c077a/305046183.pdfIn PDF document text
    • http://ccspatti.org/userfiles/file/xesigawakifepizipodiw.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f8f766af80---maritelubobebubibo.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be4aae47dee---68557898961.pdfIn PDF document text
    • http://lenosada.sk/editor_uploads/files/jezatevatujinirife.pdfIn PDF document text
    • http://cichanski.com/Upload/file/3346284890.pdfIn PDF document text
    • https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/2di2rsigef30ra1cposfbl6f56/47701611465.pdfIn PDF document text
    • https://dadrarad.ro/userfiles/file/2019975384.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=parliament+house+drawingPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10752 10884 bytes
SHA-256: a8a22c2ff283c143ac87b4d305bd7f32a6af51542e40925232e6fdf8569a81ff
font_01_sfnt_off00012019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12019 18096 bytes
SHA-256: 216c913ad9d5c4bd21246a868429c99f4eb5a4f8042585064bf551b76f93d6b3
font_02_sfnt_off00014f99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F99 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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