Malicious PDF — malware analysis report

Static analysis result for SHA-256 00a62640972047f7…

MALICIOUS

PDF

90.1 KB Created: 2021-07-23 00:35:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: 45ff3c1219cba05d73d25d9ad4598fe9 SHA-1: 57cea8bbb29bfc1e09849599ff28b3c53928706a SHA-256: 00a62640972047f73782851bf49b53c47dc2f12213a6bfeb5cb7be2c76ae6d17
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1539 Steal or Forge Credentials

The file was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a credential phishing lure. The heuristic 'SE_MFA_LURE' indicates the document likely asks for one-time codes or MFA confirmation, consistent with stealing session tokens or abusing multi-factor authentication. Numerous URLs point to compromised CMS uploads, suggesting a distribution infrastructure for phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ac3da1e50bf---kemanojerikowed.pdf In PDF document text
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/0d4b996741b5ba8814807baeb50f2269/37474295543.pdfIn PDF document text
    • https://kitapkaplama.com/upload/ckfinder/files/91500237352.pdfIn PDF document text
    • http://contentworks.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606e2193f297d---natewunukipokemoja.pdfIn PDF document text
    • https://www.corpeverest.com/ckfinder/userfiles/files/71516036892.pdfIn PDF document text
    • https://realestateconnect.pro/wp-content/plugins/super-forms/uploads/php/files/bdd2jqn62ufeqfbduudfhs10e0/89585767265.pdfIn PDF document text
    • http://www.publicitymailing.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160a4d017cdb83---75226533776.pdfIn PDF document text
    • http://capitolmetrophysicaltherapy.com/userfiles/file/79523975730.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098b504e6ac8---3488750556.pdfIn PDF document text
    • http://fashionflutters.com/ckfinder/userfiles/files/faluruvobo.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/3f02942f0f550686e0eacc8d03f93b7c/petemaxafafaxexivis.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160b3e16213318---22213742373.pdfIn PDF document text
    • http://bjallstar.com/upload/file/xugozixewolovuwas.pdfIn PDF document text
    • http://ipsgroupjjn.org/userfiles/file/maxowuvomuruge.pdfIn PDF document text
    • https://bonafideonline.com.ar/wp-content/plugins/super-forms/uploads/php/files/7df247788fc4489430d4a80fa9f4f0a1/kosopobepekojotepifevaju.pdfIn PDF document text
    • https://annekienlen.fr/imagesfile/metux.pdfIn PDF document text
    • http://freetourscadiz.com//ckfinder/userfiles/files/bamomi.pdfIn PDF document text
    • http://andrelandberg.com/userfiles/file/70448659362.pdfIn PDF document text
    • http://asesorgubernamental.com/images/file/28342917808.pdfIn PDF document text
    • https://jackyrouxmethode.com/userfiles/file/66693399503.pdfIn PDF document text
    • http://huile-de-nigelle.info/userfiles/file/koxod.pdfIn PDF document text
    • http://mayinluatudong.com/uploads/userfiles/file/gelokalavewuwegulurukajit.pdfIn PDF document text
    • http://dentalclinicbangalore.com/uploads/52899885630.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=peter+linz+automata+pdf+free+downloadPDF 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_off0000f9e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E8 17680 bytes
SHA-256: 4d7f34bfdd67a4714b50a13bdd9afef7561bcb8343e0d6a36a9b377546df68d7
font_01_sfnt_off00012897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12897 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000140ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140AE 10740 bytes
SHA-256: 3e65f0aad69c0ca7947f114a915af06c0c016cddcdfd4338ad1a00d812b38bca

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