Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3572637b80c303c…

MALICIOUS

PDF

97.2 KB Created: 2021-07-04 06:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 0eaecf6f048906ffaed40b100559081e SHA-1: def712025e0a6b247846152b29fce54f0b7663ed SHA-256: b3572637b80c303cbb293d608cddb775f45c37fef59dd17054b115553a3d3594
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1204.002 User Execution: Malicious File

This PDF document exhibits multiple lures indicative of a phishing or scam campaign. It contains links to external sites, some of which are hosted on compromised WordPress installations, suggesting a pattern of distributing malicious content. The presence of 'payment redirection' and 'browser installation' lures indicates an attempt to trick users into either changing payment details or installing potentially harmful software, likely leading to financial fraud or further malware infection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://chcial.ru/uplcv?utm_term=cash+for+apps+generator PDF link annotation
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079b66b4189d---6819122891.pdfIn PDF document text
    • https://dimensioninteractive.com/WYSIWYGImage/file/xenofaxaz.pdfIn PDF document text
    • https://actaviaserica.org/board/file/files/77500766138.pdfIn PDF document text
    • https://bselink.com/userfiles/file/julexemajifut.pdfIn PDF document text
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/a573cc71cb67a0f7715bec1bd71ef331/riseta.pdfIn PDF document text
    • http://ottotech.center/userfiles/file/32823614823.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/c209e15f595a36984e97aece1b5f94c8/54480336475.pdfIn PDF document text
    • https://rotherelectric.com/files/degirevovepoponiwuraz.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/6f5acb2315b6ecb8bcd8a2810d734447/66266815214.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/79e4b6a7088a2e627cc94634ac9589c9/lurujokizirijaf.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/3f63226831049e0dede46ca51ebfc7e4/fajuletesubofojam.pdfIn PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/58665837102b37e7000dd796ae180e96/33197173831.pdfIn PDF document text
    • https://angel-juicer.com/FileData/ckfinder/files/20210701_CC27740F91A826A1.pdfIn PDF document text
    • http://applexin.com/ttpsea/files/file/xojunogamazugipoma.pdfIn PDF document text
    • http://anhuizpyy.com/upload_fck/file/2021-6-18/20210618022610865075.pdfIn PDF document text
    • http://jmvlpslimited.com/ci/userfiles/files/76070426220.pdfIn PDF document text
    • http://ultraljud.nu/bild/files/zuwenetegizab.pdfIn PDF document text
    • http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16092d806eae41---40254053716.pdfIn PDF document text
    • http://greaterdeliveranceministries1.com/clients/61527/File/fojefaluramuladanabafiwi.pdfIn PDF document text
    • http://szpital-sulecin.pl/images/fckfiles/file/fatazovoranajuwenoji.pdfIn PDF document text
    • https://space1500.com/wp-content/plugins/super-forms/uploads/php/files/4f4106014cdfadb87b1290cbb35c7094/45452191954.pdfIn PDF document text
    • https://ivanda-commerce.hr/userfiles/file/mazax.pdfIn PDF document text
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160727b11bc5bf---kigeroz.pdfIn PDF document text
    • 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_off000119cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119CB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000131e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131E2 10532 bytes
SHA-256: 49b0cbae48c5851c039f18cb65ff5a3cadb511f58a6e52c093a29df8d75d96cf
font_02_sfnt_off000149dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x149DC 17056 bytes
SHA-256: cf331f248e49af0d37a61615a0b502f96ead21ad706242bc00c57335f5f5f169

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