Malicious PDF — malware analysis report

Static analysis result for SHA-256 14e7090630211a50…

MALICIOUS

PDF

86.2 KB Created: 2021-06-27 20:24:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: fe1f19f09e179104ecb22e28e2cf7194 SHA-1: 0eb8d7c64ef05f9fb80fd5474b7aa7df4e5685b6 SHA-256: 14e7090630211a501ecc2c7deeb5255d1eaf687c9bbf8fdad1dbafb0508dec25
196 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 a payment redirection scam. It contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, suggesting an attempt to obscure the true destination. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing campaign designed to trick users into believing they need to update payment details.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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://garglob.ru/uplcv?utm_term=nice+reply+to+how+are+you PDF link annotation
    • https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/70uqtuoqjokktm3rq2f5vtae9b/33348240811.pdfIn PDF document text
    • https://istanbulbalbir.com/upload/ckfinder/files/33617380216.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607879215d889---74696954892.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088191f78b66---46236445945.pdfIn PDF document text
    • http://anhbanglaw.com/userfiles/file/56785392664.pdfIn PDF document text
    • http://uleshuzatshop.hu/files/file/26014776622.pdfIn PDF document text
    • https://biothiennam.com/media/ftp/file/39315451085.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/bagosejuwejevajujal.pdfIn PDF document text
    • https://ambientltg.com/wp-content/plugins/super-forms/uploads/php/files/367cc57e0d09bb7a2d1086b467a6ac13/78537391913.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608633998e61a---32292305478.pdfIn PDF document text
    • http://sl1971.com/clients/5/51/517263f0417f9379c67e6eba0e0bdfe8/File/nexusokomawogegu.pdfIn PDF document text
    • https://laps.pl/userfiles/file/vinasiloxi.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d34ba0a428c---52595660167.pdfIn PDF document text
    • http://metrocars.london/survey/userfiles/files/2564132442.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/1jkoe2bbuuog7ldiclo43qnt6m/82291954585.pdfIn PDF document text
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/9rnl7dg3dbhncdtuml1obsd6ml/nenebuvib.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/f3e7792e7f8a68fa7170da3b3d0e269c/fetiwipizuremoxezimome.pdfIn PDF document text
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/0b11370fac2e5574ff6531079e5707ff/65807397802.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160753677513cd---ketifegafuvawejadinujonav.pdfIn PDF document text
    • http://togetherwewalkny.org/clients/2/24/2411cc079aa0f0d7fd57f81c6163ecfd/File/zawisipaxad.pdfIn PDF document text
    • http://www.addvanceo.info/userfiles/files/maxipazilonetaminixe.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_off0000ee8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE8C 10476 bytes
SHA-256: d2ebc65b9b07bf7527af171369f8c6f3e1e6f8c6ce5527cbccc65de1a3d22998
font_01_sfnt_off0001068e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1068E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011ea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EA0 16888 bytes
SHA-256: df35630d61a53497dbbbd8a57b953931205336e4fb6ccf0a5be33ba158397d7b

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