Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae4ceb58134066d7…

MALICIOUS

PDF

90.6 KB Created: 2021-07-16 02:50:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d6209117e8a572e29a6c36a41f408176 SHA-1: 2fca034d306d6dab4becd224ae4d17d6b66e2501 SHA-256: ae4ceb58134066d7c8935c60062ffd63b44d7a20fda0b559eccb242c6495dcd3
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and flagged by an ML classifier. Heuristics indicate it is an advance-fee scam lure, presenting language related to lotteries or prizes combined with wording about funds and parcel delivery. The document also contains numerous URLs, many pointing to compromised CMS upload directories, suggesting a link farm designed to host or distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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
  • 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 http://xn--80aaaaaikdebj9ccf1ayja1b5a3q.xn--p1ai/ckfinder/userfiles/files/vibivape.pdf In PDF document text
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/160bdbb7286217---bavebagetewixufimu.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/62ab8f83875e351845281f686b3da7e2/22567856914.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5d90312888---tegutipekuxenud.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b3e3685a46d---butenunutafegu.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609643eb49b3f---19155195893.pdfIn PDF document text
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c1f1dd35fd---23151135246.pdfIn PDF document text
    • https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/5de906897f42bb53521a9fbff3b3eaaa/luvawufigiwoga.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/458c506bcf59d27bb0327e879ebd2ef9/vekesusaje.pdfIn PDF document text
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/944990d45bd09863b0583654f94996f0/41138260511.pdfIn PDF document text
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c389500cf50---58673571878.pdfIn PDF document text
    • http://alt-1c.ru/userfiles/file/99333017568.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16072a9dc3bb38---47411779832.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6331195f7---71940857966.pdfIn PDF document text
    • https://pichsas.com/file/21766129618.pdfIn PDF document text
    • http://jinistudy.com/_UploadFile/Images/file/zowosoxuwugebolisu.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/61fbb3baf631f3a304c00d45046ce040/fozudowadunupetiluwamej.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdce2840a36---62946471121.pdfIn PDF document text
    • https://mgogs.com/mgfiles/file/97848723505.pdfIn PDF document text
    • https://nnt52.ru/userfiles/file/nubisumawadujir.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160947855409f3---14252328308.pdfIn PDF document text
    • https://fablab808.com/nbloom/fckuploads/file/63426296323.pdfIn PDF document text
    • http://www.vikingmaterials.com/img/zudedemarigepe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=colors+that+pair+well+with+olive+greenPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF73 17152 bytes
SHA-256: e6b4ef18194070b33ae21c3e5ca335e94482b1270b8f4d2d3927155926c5ca01
font_01_sfnt_off00012c85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C85 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001449c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1449C 10712 bytes
SHA-256: f41cf559c719b11f60ccb721d0e1c401d46b8c700560838f366794bf62f1e115