Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee8d689ee612db4a…

MALICIOUS

PDF

85.9 KB Created: 2021-08-09 03:29:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: ddf8919f63fa561d34d4d8e86c71427f SHA-1: 1c4c1c9c37877fff72eaa84aee2e00f49f3b7dcf SHA-256: ee8d689ee612db4a605cbd24871f1ede0c6ebe1359bfe458534b9e9bb5663491
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document that exhibits characteristics of a phishing lure, specifically related to payment redirection. Heuristics indicate it contains multiple links to potentially compromised websites and a high-confidence ML classifier flagged it as malicious. The ClamAV detection further supports its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to trick users into visiting malicious sites, likely to steal financial information or credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 8

  • 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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://huntic.ru/uplcv?utm_term=what+do+you+do+at+a+work+orientation PDF link annotation
    • http://spearsyounglegacy.com/clients/b/b2/b2c23f164518415ec8f3c1c8d0af542d/File/19893048589.pdfIn PDF document text
    • http://synhbio.com/upload/files/xasenikulodeloxere.pdfIn PDF document text
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/rlk5sd1o9epaho3l80mt79le4d/diwedasabatudunari.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/68605896855.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/a14bb2aa0ec166b9a3fb66398fb16845/12242033785.pdfIn PDF document text
    • http://poultech.net/d/files/3949975159.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/3c5a6c3153d6cbe596b1f40cc6dde20b/vesiwitaza.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c864223c299---76265836218.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/dc28c1f43925bee1e79f619c5e1341bf/fipulaso.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/160ba3979ca185---34731799633.pdfIn PDF document text
    • http://fred-robin.com/ckfinder/userfiles/files/kinakakanozofole.pdfIn PDF document text
    • http://prodottoitalia.eu/userfiles/files/58514662446.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160bf6a4d200f7---zawoxugibadipidonexevef.pdfIn PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/85b2r2u9rno4d9hri2g5mpsn45/40187072529.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/eeskidmdu4jenjsm54vbu2kndm/11311097729.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/1607de78195c89---46360231876.pdfPDF link annotation
    • http://ghioroiu.ro/sites/default/files/file/17188921394.pdfIn PDF document text
    • http://romengo.com/ckfinder/userfiles/files/zulovegoxeriduzi.pdfIn PDF document text
    • http://k-sta.kr/FileData/ckfinder/files/20210715_6CF2B6A03C93D450.pdfIn PDF document text
    • http://engroupe.ca/aym_image/files/balorasuxogunoli.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c16a730b292---18152003160.pdfIn PDF document text
    • https://cupanghitam.com/contents//files/85772922539.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a097617bc90---najaxuk.pdfIn PDF document text
    • http://jungam21.com/upfiles/file/1627588252.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eae4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE4 10516 bytes
SHA-256: 7ea52126e20a39217bbb5b5c16fb48048273d6034cbcd8494095a664049d7061
font_01_sfnt_off000102d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102D6 18680 bytes
SHA-256: 595d98b3eadd02328ac29d01cab72aa7c03c78d298ec8d7ad63f8590517493a9
font_02_sfnt_off000131d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131D2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1