Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0470d0f9dc41fc5…

MALICIOUS

PDF

84.7 KB Created: 2021-07-10 09:46:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 948f82199dfd9af2bd42fe5eb3ada099 SHA-1: b98a3218d8b8979bdfeda1e2a37c80960a556ff0 SHA-256: d0470d0f9dc41fc5ce4af2ab4b030b1b5e1c1fe37dbecf7e6dd326e44ecbbec1
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of an advance-fee scam. It contains numerous links, many pointing to compromised WordPress sites, designed to lure the user into clicking on a malicious URL. The document body was unreadable, but the heuristics strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://drafthe.ru/uplcv?utm_term=introduction+to+desktop PDF link annotation
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609b654fb682d---jiluzite.pdfIn PDF document text
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/422bfd448d4ac0ca585cd532483a79b4/92634825316.pdfIn PDF document text
    • http://rurisnet.org/images/file/71739246028.pdfIn PDF document text
    • https://floridaholidayplanner.com/wp-content/plugins/super-forms/uploads/php/files/4fe62bd6c46ac99efadadfbf556874b5/setederexiju.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/45227625773.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/pqdv94sgo95qsq1laopdlfcj8o/relaxifirojidotezepisefi.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607198b81d8f4---zitixepibixigi.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be3721e99b0---93006305771.pdfIn PDF document text
    • http://dhf-china.com/d/files/gupenerisudigiro.pdfIn PDF document text
    • http://pomodorolennep.de/gfx/userfiles/files/85256724559.pdfIn PDF document text
    • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080ea3e94ba3---13176966549.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e53fe90f51c---88578108731.pdfIn PDF document text
    • https://p99.tw/pro_pic/files/gizikuvofobedewajedo.pdfIn PDF document text
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160cb9fc76cbe4---kidizadabama.pdfIn PDF document text
    • http://amon-syotengai.com/userfiles/file/61254579688.pdfIn PDF document text
    • http://greenworx.eu/images/uploads/files/zakesiruwolewitala.pdfIn PDF document text
    • http://ztkammer.at/uploads/file/womurenaxul.pdfIn PDF document text
    • https://hitpoint.tw/userfiles/file/11444120191.pdfIn PDF document text
    • http://conelser.hu/fck_uploads/file/27162799255.pdfIn PDF document text
    • http://www.alexgis.com/siteuploads/editorimg/file/2466705582.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/1c708pqpu927f74foo76qe4v55/vuvowonopetinas.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b3ecb4a5aa---wepenix.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a95f1f62a01---poxusufilebe.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098cbf759ab4---36867242044.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/16083430cbfd08---24473955770.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_off0000e897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE897 17224 bytes
SHA-256: f3515c089f62fc712d88ac5cb362846c5ab3d627daa68d367a0f2b71a186956a
font_01_sfnt_off00011596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11596 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DAD 10440 bytes
SHA-256: 489082c7a1edea0adbf8ecf477c72745fae31caf10fdf88a7041f2d79e8e4b93