Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2470389dfe522ac…

MALICIOUS

PDF

73.7 KB Created: 2021-09-04 04:46:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: b0eec9e283fe3c68105764be768fa475 SHA-1: e3fd76b66f3040a3a294507ba67021ea994d373a SHA-256: f2470389dfe522ac04e83a799d173eef48934e5de366fcf52501ca8a6a46743e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a link farm pointing to various compromised WordPress sites and disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics strongly suggest this document is part of a phishing campaign, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://teenmag.cz/userfiles/file/78396982609.pdf In PDF document text
    • http://gldbirdgel.com/user_img/files/6623538900.pdfIn PDF document text
    • http://rajskiewakacje.pl/userfiles/file/51135312345.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/29cc5f791bad1157b2d1511fedbb3f3b/2052956069.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/8b2c692abff25bd1951fa195f0bd5a21/28063152283.pdfIn PDF document text
    • http://colafranceschi.it/userfiles/files/87094966786.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/27fb4b7e7e1b32f245d52a55047c3f2c/31506779008.pdfIn PDF document text
    • http://techbico.vn/uploads/image/files/foxixav.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16125c41ad6002---xuxalevizanudobafot.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1874e02996---20820256855.pdfIn PDF document text
    • http://minhphucvietnam.com/uploads/userfiles/file/27852007695.pdfIn PDF document text
    • http://innospectrum.eu/hirlevel/file/10007645235.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076d1be283f2---46272551413.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b3e33d61062---52978622398.pdfIn PDF document text
    • http://geopraxis.it/userfiles/files/53424291605.pdfIn PDF document text
    • https://tonitomov.com/picture/file/tovugilepogozibuwakajoxut.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c4030507bfd---zagipekubujojiju.pdfIn PDF document text
    • https://rugerwafers.com/demo/ruger/beta/userfiles/files/59563295163.pdfIn PDF document text
    • https://avflash.nl/upload/files/vemeder.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c06c139e9d1---febunovokiparufodid.pdfIn PDF document text
    • https://canionglobal.com/FCKeditor/file/lesizikuxipamibogapit.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160add1f7a2739---rugalutivu.pdfIn PDF document text
    • http://kubablimel.pl/Image/files/13617622687.pdfIn PDF document text
    • https://mariapolis.net/ckfinder/userfiles/files/31306839752.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=elementary+linear+algebra+solution+manual+11th+editionPDF 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_off0000bb35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB35 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d34c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD34C 11084 bytes
SHA-256: 167d22a26a6270f1170c08e39c9a4e310392a2bdb9a23b0b5456f60765976080
font_02_sfnt_off0000ecbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECBD 16992 bytes
SHA-256: 05fc8469bb1ac60d5923b6c396492531d687800ce561198285384c4369ea2a23

Open this report in the interactive analyzer, or submit your own file for analysis.