Malicious PDF — malware analysis report

Static analysis result for SHA-256 eebed5658f01a0f5…

MALICIOUS

PDF

71.4 KB Created: 2021-09-02 23:42:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 7f06c0224ee0c4f2d346b6b5fc838132 SHA-1: 18f2f1156b22b80a21e6fa88bf556fe57ddba209 SHA-256: eebed5658f01a0f5bc5badc20684e44e1308a56958cc3725c307a3f7009f0fc1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised websites, indicating a phishing or malware distribution attempt. The presence of a link farm on disposable hosting further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/93d69b64565c6d5047f4ede49ef3b064/65422416125.pdf In PDF document text
    • https://ilmercatinosottocasa.com/file/42340134204.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/cqlqf9aj61tbin6alda19lf7lq/83632882042.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c821468edf---43337589815.pdfIn PDF document text
    • https://kede.org/userfiles/file/76564228856.pdfIn PDF document text
    • http://esipro.fr/userfiles/file/seganarogoroxigag.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/cc13489fe447c8917fe135e99fd2ec5d/tuguzagizuv.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16090c5be33b8a---dokino.pdfIn PDF document text
    • https://livredart.com/ckfinder/userfiles/files/sigasogokuzudosako.pdfIn PDF document text
    • http://toyotarent.hk/FileData/ckfinder/files/20210813_DFA0CB18C0346B72.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609d702e67698---mezerufudufaduvib.pdfIn PDF document text
    • https://egokituz.org/files/galeria/files/wesabamonevifere.pdfIn PDF document text
    • http://firewheels.pe/userfiles/file/66697837086.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160f2a6d9cfafe---84676428354.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/8g485s6vgllqstrj6v0ub7g402/kinakapuresuluki.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/d2f382b7116e11aee4be4df15fb6f19e/rekuj.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f8d9f59ff1---71246340119.pdfIn PDF document text
    • http://simpelms.nl/userfiles//files/27216930450.pdfIn PDF document text
    • https://absolut-fit-and-dance.de/wp-content/plugins/super-forms/uploads/php/files/o5pa3ars3up8mj629qfm5fkpg6/58697913617.pdfIn PDF document text
    • http://midospa.com/upload/files/30306853675.pdfIn PDF document text
    • https://incasur.org/temp//files/nodenenakomadujag.pdfIn PDF document text
    • https://pierreseche.fr/userfiles/file/fozuloliranugonumegamibu.pdfIn PDF document text
    • http://hzzxtl.com/UploadFile/file/20210728062328198.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/16080bc3617893---95932737135.pdfIn PDF document text
    • http://gutachterbewertung.de/userfiles/file/45445372021.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=plasma+rico+en+plaquetas+pdf+2019PDF 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_off0000b797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB797 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cfae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFAE 11488 bytes
SHA-256: 1a35101b0eae6650341f313b399a9913fbf30cca20c280e156602c0529e518a3
font_02_sfnt_off0000eab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB3 14616 bytes
SHA-256: b1c4b51d44468429687da0ffa875842716d12264c944310d5d9a438099e67b29