Malicious PDF — malware analysis report

Static analysis result for SHA-256 7444245dd36ab6e3…

MALICIOUS

PDF

77.7 KB Created: 2021-09-17 16:16:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: cdea4f1ac9b47ce756da8f517ffc9f7f SHA-1: a7f5389a23a6b4013cae087ab3d95ae9118dae9d SHA-256: 7444245dd36ab6e3afcf9ccde278a28e3a3418afb26e8251323eeccb5e534794
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, for being malicious and containing a payment redirection lure. The document body is heavily obfuscated, but the presence of numerous external URIs, many pointing to compromised CMS uploads or disposable hosting, strongly suggests a phishing or credential harvesting attempt. No scripts were extracted, but the overall pattern indicates a likely attempt to trick users into clicking malicious links disguised as financial instructions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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
  • 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://irlanc.ru/uplcv?utm_term=how+to+share+contacts+through+shareit PDF link annotation
    • https://www.temtechnologies.fr/ckfinder/userfiles/files/xamupopede.pdfIn PDF document text
    • https://millersexpress.com/userfiles/file/51713621794.pdfIn PDF document text
    • http://malbreil.com/userfiles/file/xojaviniponobuvewode.pdfIn PDF document text
    • http://tysons-cafe.com/uploads/files/zarimij.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/30786380.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613af7ede695b---57954236311.pdfIn PDF document text
    • http://veraschwemmle.de/fckdata/file/49730142789.pdfIn PDF document text
    • https://tavfelugyelet.megujuloenergiapark.hu/admin/ckfinder/userfiles/files/11982262231.pdfIn PDF document text
    • http://innova-perila.ru/upload/files/72080589871.pdfIn PDF document text
    • http://xn----7sbbbizu2bxaod.xn--p1ai/userfiles/file/28073303586.pdfIn PDF document text
    • http://tucsokszekszard.hu/images/news/file/8437853572.pdfIn PDF document text
    • http://lineshare.net/upload/files/20210909232639.pdfIn PDF document text
    • http://www.malagatour.es/ckfinder/userfiles/files/2763679395.pdfIn PDF document text
    • http://form4concrete.ru/pics/cont/file/fariweposeseb.pdfIn PDF document text
    • http://rubella2.integra-sh.com/userfiles/file/xoruguserikogobitid.pdfIn PDF document text
    • http://daiichigroup.net/uploads/news_file/25883352845.pdfIn PDF document text
    • http://saraiaser.nl/userfiles/file/pejezivuvemanige.pdfIn PDF document text
    • http://goldstecq.com/userfiles/file/29507989450.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136cef8a913f---solipokokufiru.pdfIn PDF document text
    • http://cafegreenwichvillage.com/uploads/files/19183551357.pdfIn PDF document text
    • https://tannhatviet.vn/upload/files/19476593858.pdfIn PDF document text
    • https://tagoproperties.com/ckfinder/userfiles/files/forogisodupinajati.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_off0000cc83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC83 17356 bytes
SHA-256: 34e12b41e715cf92166ed910786dbe259b50b16bb89b9921a93a854633858b0c
font_01_sfnt_off0000f909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF909 10640 bytes
SHA-256: 1e82d0809dc537e83919d21b1c8e7042cb048534eef6818ebe0eb89f9eb82cbb
font_02_sfnt_off0001116b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1116B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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