Malicious PDF — malware analysis report

Static analysis result for SHA-256 17ac1e1f415f14a4…

MALICIOUS

PDF

77.2 KB Created: 2021-09-04 09:47:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: e60522285ab30ea7a96c38c801a0e9d9 SHA-1: 0e5388014d4c2b4d90222774e978aafe33ba1e62 SHA-256: 17ac1e1f415f14a4aca8aec7dbcb9213f2b01609579dab4a363eaba6d9ca52bc
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised websites or are part of a link farm designed to obscure the true destination. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution through these links. The document body is heavily obfuscated, preventing analysis of its direct content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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 http://cloverpark1961.com/clients/6/6a/6a73a08bb68f643008adb5efbbb44e43/File/77213591010.pdf In PDF document text
    • http://teknis.it/userfiles/files/50691828505.pdfIn PDF document text
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/faa89733754972d89d1a73790eaf81de/37958710051.pdfIn PDF document text
    • https://elperrocallejero.info/ckfinder/files/76073650203.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160d5a70e5d4f0---87075995106.pdfIn PDF document text
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/fmv20si41qu3aaq80tv2jng472/30133614711.pdfIn PDF document text
    • http://msnladyboy.com/ckfinder/userfiles/files/93989863447.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/gusenukopaduvurabaminux.pdfIn PDF document text
    • https://suksesunited.com/contents//files/ruxubofejirow.pdfIn PDF document text
    • http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1612349dd454f7---44132855812.pdfIn PDF document text
    • http://belovosushi.ru/files/mizikajudugaja.pdfIn PDF document text
    • https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/0jua102gng28chf21fs70rlgcq/72452053338.pdfIn PDF document text
    • https://royal-art.pl/uploads/userfiles/files/nogapaj.pdfIn PDF document text
    • http://willettelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/talopip.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d17089c2bc---burawuzapowaxog.pdfIn PDF document text
    • https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/8b7746eb7a5bee1e87e9efcbbcd0bc17/dasijizuxuf.pdfIn PDF document text
    • http://gewoongroen.eu/app/webroot/files/userfiles/files/98225972804.pdfIn PDF document text
    • https://nutritie-metabolism-sanatate.ro/app/webroot/files/userfiles/files/38372315789.pdfIn PDF document text
    • https://christianklein.eu/Quansis/ckfinder/userfiles/files/94451546918.pdfIn PDF document text
    • http://www.aceitunasdelguadalhorce.es/ckfinder/userfiles/files/nilajusekaw.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/jaum6fq36qtu7o37cvps0g883n/58428433558.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/2b230f86665a032fbf6c31b0886e8ae7/48098259738.pdfIn PDF document text
    • https://singaporenotarypublic.com/wp-content/plugins/super-forms/uploads/php/files/b83b1dd7a58d0c3984d2c57bccb48727/34875795875.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=communist+manifesto+pdf+germanPDF 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_off0000c938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC938 17244 bytes
SHA-256: c866c66e0205e0aa7d0aaf702f035f30337611ea338578753d171f2090fe44bb
font_01_sfnt_off0000f5f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010e09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E09 10924 bytes
SHA-256: cbe04be984e50a8af6ac59589ea2b1d6b2d13862afc6a39bd3034d418458ad5a

Open this report in the interactive analyzer, or submit your own file for analysis.