Malicious PDF — malware analysis report

Static analysis result for SHA-256 0219fed64bd5ea7e…

MALICIOUS

PDF

86.0 KB Created: 2021-07-07 14:52:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: e51639410a60bb1287029dd944e7123e SHA-1: d2f87d427455bf0499556ce9bcae8fccc166f10e SHA-256: 0219fed64bd5ea7edf0907dafc31c35216f847d81c10ccf510b5700a33ce07b3
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1539 Steal Application Data

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics suggest it functions as a link farm, with many URLs pointing to compromised WordPress sites, likely serving as lures for credential harvesting. The 'SE_MFA_LURE' heuristic specifically indicates the document is designed to trick users into providing one-time codes or MFA confirmations, consistent with phishing tactics that aim to steal session tokens or bypass multi-factor authentication. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/a3c914f641ffa126f61679eb92955f3c/ferewu.pdf In PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/21b7205f00dc39e8cc86a756a2bbd213/giranojuromijatodewuda.pdfIn PDF document text
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/73565c543e209cc4bc83ffb4366a2186/vozusow.pdfIn PDF document text
    • https://spacio.hk/attachment/file/42874133947.pdfIn PDF document text
    • https://bataretak.com/img/files/file/bujulolegodaxafezegosoxo.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160b90e06de65f---88739953952.pdfIn PDF document text
    • https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/ff7bbea6814ae9b292c30baee24f1b1a/2056582808.pdfIn PDF document text
    • http://j-line.ca/fck_upload/file/73713551156.pdfIn PDF document text
    • http://anthonyvienna.com/sites/default/files/file/87817693737.pdfIn PDF document text
    • http://klpa.net/userData/board/file/guzimigovakemubexukukume.pdfIn PDF document text
    • https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/c59bbt4n49r135e38s85tvi6ql/gogedetebasa.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/16090d779cf919---70847627037.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/a7df28e7c630f32fbbde4d0e06782a00/kanepusotugunepomuxis.pdfIn PDF document text
    • https://abe-rdc.com/userfiles/file/damikewobig.pdfIn PDF document text
    • https://www.cpro.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16071cae3a918a---11963773100.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/46ac6cefbffcc28072c0aee1e1befcfb/remurekojuvujurupukewano.pdfIn PDF document text
    • http://prociweb.hu/sites/files/file/ritonogitajabajerakazitob.pdfIn PDF document text
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3548dbe3c7---85871587210.pdfIn PDF document text
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/17fe565b15b137ac47e5828228adff1e/japilerasokisir.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/dipimizowenuj.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a6f3f7be281---42389415254.pdfIn PDF document text
    • http://olsztyntransportmedyczny.pl/userfiles/file/zojabeka.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16094682cb2cdd---99330201354.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=set+theory+for+beginners+pdfPDF 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_off0000ebde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBDE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000103f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103F0 17924 bytes
SHA-256: d3b74a02532484b4837b21d932a399a9252ac524d8b0ecbaa310a3b05d030405
font_02_sfnt_off0001323a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1323A 10896 bytes
SHA-256: 370e66cbbeff68401781fea46d63ab80128186a9e94fcbdb16b1e62b39f9a776

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