Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9b3ac90816ed14a…

MALICIOUS

PDF

89.5 KB Created: 2021-06-27 12:45:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fb7a17471377f7f891e752c9370ed22a SHA-1: d0367d1f0069a7665a149bd132948a792b5ec484 SHA-256: e9b3ac90816ed14aa0cfd76a7f6cd29766136007456ed4ae3f19ce76c7c52b12
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was identified as malicious by ClamAV and an ML classifier, and exhibits characteristics of an advance-fee scam. It contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms, suggesting a distribution network for phishing lures. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious intent to deceive users into believing they are eligible for a prize or funds, which is a common tactic for advance-fee fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a215dc97ac3---lesapofonenuki.pdf
    • http://renovator.cz/files/file/zaguniwuli.pdf
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/4d73e05de30fe571ddd6643cd04c8642/fulasuwapeg.pdf
    • http://mhinflatable.com/upload/file/31228247394.pdf
    • http://placc.info/up_image/garaligamoxiwadoseziraze.pdf
    • http://aaaexpressheating.com/userfiles/file/25679431811.pdf
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/be24ee608864ce2e930c8b8aa4762224/warixugogujepoz.pdf
    • http://fouladsazanco.com/Upload/file/torupuxexuwo.pdf
    • http://youngshiny.com/userfiles/file/1621469185.pdf
    • http://poorclarescork.ie/images/26801127763.pdf
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/e45be766a7560522b829a9c04a880815/65308463433.pdf
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8040532295---4003998726.pdf
    • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fae305a76e---55049347741.pdf
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/urbvddtbp2a6k5a8jont7np1ko/wikubagovegejapa.pdf
    • http://maynenkhiinverter.com/media/ftp/file/balale.pdf
    • https://ytdrive.com/CKEdit/upload/files/taretijonuxusamasolagi.pdf
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/f4fdf0738c6e9f76a545faa729ddcc25/mesulalebulopalanig.pdf
    • http://studiotecnicodavico.eu/userfiles/files/poroxizivezola.pdf
    • http://coss-wynn-reunion.com/clients/d/db/dbe3622004495b304d8703879a486b7d/File/moxizek.pdf
    • https://ensasoft.com.tr/wp-content/plugins/super-forms/uploads/php/files/8dfqqm6htfqraqkk7sds2kk3hf/wovep.pdf
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/1d12d6cb38846a82a35a907afa05794b/28853700287.pdf
    • https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/58b134f4c4e5e8061952ad1e52b09e21/44611478833.pdf
    • https://monuments-msk.ru/wp-content/plugins/super-forms/uploads/php/files/21994801e5c478b636873d51af45719c/13971388062.pdf
    • http://aloeverajuice.cz/files/file/83418985233.pdf
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/160745899494f8---jesilojoguximunigunegu.pdf
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/04ac657f14859f339be8c31759d5187c/60200593462.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=non+joinder+of+parties
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd35.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD35 16792 bytes
font_01_sfnt_off0001154c.bin
ac46a71e94840f474f0ff042a3e163030976137ee46d56fcad590bd1f2beadcb
pdf-font-stream PDF embedded font (sfnt) at offset 0x1154C 10552 bytes
font_02_sfnt_off00012d67.bin
7afca59a41c6e324f38252d7e2ebe996dd18253cee780a343a217f96648a43a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x12D67 16900 bytes