Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f02606e997a6f85…

MALICIOUS

PDF

79.2 KB Created: 2021-06-30 12:10:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: df1bed972b4b09ee6a6679fefa2305ab SHA-1: a19e60198d8f4f7fbfc391a9089e0edb9b4dedcb SHA-256: 5f02606e997a6f85213fb0e0ec33666ea11f71c07fdae2c84c56534884742025
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a phishing lure. It contains a link farm pointing to multiple URLs, some hosted on potentially compromised CMS uploads, designed to trick users into downloading a password-protected archive. The embedded URLs and the overall structure suggest an attempt to deliver a secondary payload, likely a trojan or malware, under the guise of a legitimate file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://hitecds.com/userfiles/file/5784100647.pdf In PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/26a2e439f624b6c96ef35c2d66529207/96653538114.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16096c5347936b---62878679120.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a2fc5017d---tozigosu.pdfIn PDF document text
    • http://myphamhelios.vn/luutru/files/dalojesefajopotomesor.pdfIn PDF document text
    • http://ozkayalartrans.com/userfiles/file/mokakomejavixukomi.pdfIn PDF document text
    • http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fa7e70749e---wufuxuwivamovisetabogax.pdfIn PDF document text
    • https://dm288.com/slicice/file/zefarosofejomutu.pdfIn PDF document text
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/ef33688beb38ccdfb6778cff739f4597/50929941676.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7f62f5355b---67020995946.pdfIn PDF document text
    • https://magyar-logyogyasz.hu/fileok/file/15796475591.pdfIn PDF document text
    • http://phenix-security.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160799ebf87131---2834617120.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c10fd0600e7---76024958843.pdfIn PDF document text
    • https://thegioidongphuc.net/ckfinder/userfiles/files/97673658186.pdfIn PDF document text
    • http://dom-2000.ru/ckfinder/userfiles/files/mazamekexomilulisilute.pdfIn PDF document text
    • https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/0ke2vemecurdac0qa4meko5l6o/tuzak.pdfIn PDF document text
    • http://birzebbugastpetersfc.com/files/file/wexuzekodivigibewafig.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb7cee347ee---70457252751.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/f2514b1a6acab6ad1ef493ed5e462079/jolovorag.pdfIn PDF document text
    • https://capecoralliving.com/media/file/85045480509.pdfIn PDF document text
    • http://appletechsolutions.com/userfiles/file/12690851940.pdfIn PDF document text
    • http://fotografoenricogiampieri.it/userfiles/files/nijemunafomogowejepubuk.pdfIn PDF document text
    • http://gemculture.com/userfiles/file/luratok.pdfIn PDF document text
    • http://aaaexpressac.com/userfiles/file/tijedotujitibekobo.pdfIn PDF document text
    • http://krevue.cz/UserFiles/File/87018307834.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=how+to+install+lspdfr+manuallyPDF 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_off0000d2af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2AF 16840 bytes
SHA-256: 16e25e3acb758c2d6e7376a0f92517fe2e57e75897f31ddbafc4391786fbe467
font_01_sfnt_off0000fe97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE97 10820 bytes
SHA-256: a78ac1e916cd2d55f4b502096db0fb8f8f220e90309f1d0f9eb90ee62c3a7d43
font_02_sfnt_off0001178b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1178B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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