Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bbe060643aebaf8…

MALICIOUS

PDF

93.2 KB Created: 2021-06-29 17:29:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 50bc86ebff748e0c92efde382a90303c SHA-1: 879ca8e344adc3a96b84bc88425a8b0bc204ef8e SHA-256: 2bbe060643aebaf8177d4695255bd86524ccb1bf97fe22163d51fc6419195204
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is classified as malicious by ML models and ClamAV, exhibiting a high-risk score. It employs a payment redirection lure, aiming to trick users into believing there are new or changed bank instructions. The document contains numerous links, many pointing to compromised CMS upload storage, suggesting an attempt to host and distribute further malicious content. No scripts were extracted, but the presence of embedded URLs and the nature of the heuristics indicate a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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 https://sp-pir.ru/wp-content/plugins/super-forms/uploads/php/files/a9d2d351342ef7dcc9617adc6d6b065d/41917787083.pdf In PDF document text
    • https://csn-alliance.com/data/files/52513110783.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607f16a1351c4---dinogelazovifabaribekom.pdfIn PDF document text
    • https://sjalikave.hu/pictures/file/85010001641.pdfIn PDF document text
    • http://jinanxintiandi.com/userfiles/files/sadojugapukezugepotil.pdfIn PDF document text
    • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f534f0789b---jakadumizo.pdfIn PDF document text
    • http://xn----7sbabaajmdfbk3ddf3azka3b6a2r.xn--p1ai/ckfinder/userfiles/files/73903177795.pdfIn PDF document text
    • http://safeabortionnepal.com/userfiles/file/fujimo.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/f3kl6cu59li7t0ib86ebemte65/67088834306.pdfIn PDF document text
    • http://dermaktif.com/imgup/file/18268920708.pdfIn PDF document text
    • http://ankaser.com/userfiles/file/wutujukigut.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5ed087ca7a---futeririzufugavoxigogojam.pdfIn PDF document text
    • https://szabobuszberles.hu/files/files/14954421316.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ada33b56759---pomerozarakexafujewu.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/5c848093c303d5b697a7bee4e3687add/14760569736.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a7bad63babc---56218068200.pdfIn PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/fc3eb178227add4b2825e06c54b50cda/vizisosoxukaneje.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c1c09a430e2---sinewemexufefarudubipib.pdfIn PDF document text
    • http://peggylittlelawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dujelov.pdfIn PDF document text
    • https://brothers-music.com/ckfinder/userfiles/files/12126877619.pdfIn PDF document text
    • https://numberonerevolution.it/file/kobex.pdfIn PDF document text
    • http://aite-materials.com/upfiles/file/bipirevuzanonemotem.pdfIn PDF document text
    • https://ozmutludokum.com/userfiles/file/88948376672.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb375e1d673---56725605827.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/96e6f26fa5238913b36f49bd4fdf4822/zifojuzigepuwajafubu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=bank+of+little+rock+mortgagePDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000107df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107DF 17920 bytes
SHA-256: 237af0252449bb96d2e6dd1ab0c498bc17e0f638093a13cccfce2b87660fdf28
font_01_sfnt_off000136f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136F3 10656 bytes
SHA-256: 8159ebdde56cf1c76ab807d4270f67ed6410e3f209b70014d8323bdba9a77aaa
font_02_sfnt_off00014f68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F68 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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