Malicious PDF — malware analysis report

Static analysis result for SHA-256 69980b0297445717…

MALICIOUS

PDF

82.5 KB Created: 2021-09-21 08:28:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 6ed8eb420f5d40e2d0b24e9fad130edf SHA-1: 8ec17aa91fad376644ff1f359d27d73e7d470dbc SHA-256: 69980b0297445717b987a26c51f74c2c561b8775503e32158c87401c6ad1f62e
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, directing users to compromised CMS uploads and potentially disposable hosting, consistent with phishing or SEO abuse. The embedded URLs, while some are marked benign, contribute to the overall pattern of malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://godparents4tz.org/home/god/public_html/ckfinder/userfiles/files/76146718887.pdf In PDF document text
    • http://circolonauticofavignana.it/userfiles/files/8787781644.pdfIn PDF document text
    • http://cermak-expo.cz/data/files/file/27869182108.pdfIn PDF document text
    • http://jonkmp.nl/img/cms/file/zifutatewutesomomugijelo.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ea30e0fed7---91038094998.pdfIn PDF document text
    • http://satit.nrru.ac.th/satit/_Adminis/ckfinder/userfiles/files/65023055970.pdfIn PDF document text
    • http://huzatfokozo.hu/editor_up/tikanogigiditi.pdfIn PDF document text
    • https://karpzbeldowa.pl/uploads/userfiles/files/beregiledazosa.pdfIn PDF document text
    • https://kipass.fr/userfiles/file/tubogawazazow.pdfIn PDF document text
    • https://oolong-dining-co.com/webroot/editor-uploads/files/vudubawiwu.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/rsenvogk8ik3atm95bso368938/27457778908.pdfIn PDF document text
    • http://dwornawodzie.pl/userfiles/file/65409795785.pdfIn PDF document text
    • https://seerupit.dk/assens/file/90069156017.pdfIn PDF document text
    • http://tolaniprojects.com/userfiles/file/9535885980.pdfIn PDF document text
    • http://tolltisztitas.eu/userfiles/files/sezemoxele.pdfIn PDF document text
    • https://mkontakt.pl/dat/file/71124462483.pdfIn PDF document text
    • https://gulamanis.com/contents/files/36623555966.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/ee7897c9ff2bbe99caef84240dff34fc/vutuperataxegegaxumurot.pdfIn PDF document text
    • http://taxplus.in/images/contentimages/files/pulodabunujelepod.pdfIn PDF document text
    • http://rszm88.com/upfolder/e/files/20210901185347.pdfIn PDF document text
    • http://la-roofers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161353ab65842e---ladomusewifudutomowub.pdfIn PDF document text
    • http://canvangdientu.com/images/file/ronifiguresa.pdfIn PDF document text
    • https://gulfcans.com/home/madarmun/public_html/gulfcans/images/bulk_images/files/43329332068.pdfIn PDF document text
    • http://rc-modeller.se/images/file///9937792265.pdfIn PDF document text
    • http://psn-monolit.ru/img_file/files/89559766810.pdfIn PDF document text
    • http://ecohost.ru/pics/images/file/65149987222.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=car+driving+simulator+androidPDF 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_off0000df6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6F 10656 bytes
SHA-256: cba991a349b6c2be1a62ab2c78f6dcf80395b8b1ae6ad3b05696802d8edaf77b
font_01_sfnt_off0000f7a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A1 17116 bytes
SHA-256: dab7137b2ec89e4ce627d71300f766db3df40dedebf7b5db4cf9af714959acdb
font_02_sfnt_off000123e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123E7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1