Malicious PDF — malware analysis report

Static analysis result for SHA-256 414306c67030e6ca…

MALICIOUS

PDF

78.6 KB Created: 2021-08-01 15:44:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 8139d3dadae0d6ff20da79e4cd9a73ae SHA-1: 9e75e4187c60059af97e719d2355cd50a9bffe62 SHA-256: 414306c67030e6ca780533a5097484313866077ec2fe892eecf198892c4d1f87
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://infrive.ru/uplcv?utm_term=shakti+colors+serial+mp3+song+download PDF link annotation
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9d1ace6da2---jobasudifat.pdfIn PDF document text
    • http://bbpcosmetics.com/admin/upFiles/2021-5/file/54439524117.pdfIn PDF document text
    • http://littlepearlspublishing.in/data/eimages/file/dotolawojepefekukagun.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096ea77ee7f6---79813226727.pdfIn PDF document text
    • http://jnafarms.com/clients/864068/File/metojo.pdfIn PDF document text
    • http://ytbozhuo.com/upload/file/031850324013.pdfIn PDF document text
    • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/26905b6dd441403595d3d045306048c1/lofali.pdfIn PDF document text
    • http://mistralizmiryonetim.com/uploads/file/29495555090.pdfIn PDF document text
    • http://stihoplet.by/upload/editor/files/wuxedejave.pdfIn PDF document text
    • https://habibitoursegypt.com/ckfinder/userfiles/files/vabape.pdfIn PDF document text
    • http://ambvetesopo.eu/userfiles/files/bufomutix.pdfIn PDF document text
    • http://stewartreunion2020.com/clients/2/2a/2a0d9dcdd57715375c9f4393c24df0f2/File/kawujuriv.pdfIn PDF document text
    • https://bamor.org/userfiles/file/vuzuremumifixezagutamisop.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/ceef7b3896341c5a8566239c2955d9ba/76144526347.pdfIn PDF document text
    • http://quickvideo.nl/userfiles/file/5280257876.pdfIn PDF document text
    • https://www.poolsrus.com.au/application/third_party/ckfinder/userfiles/files/luginupugavidarokev.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/eee8f804ae4c8d0c86c7c221b1059743/rudekuvavigimumiwidela.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc16d2e399---66272106984.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160fb5279c1cc8---jezim.pdfIn PDF document text
    • https://boucherienabli.com/uploads/FCK_files/file/nuropisopi.pdfIn PDF document text
    • http://hintzfamilyreunion.com/clients/1/12/12a2788c5de59b93c87e4eff35998d4f/File/48510092201.pdfIn PDF document text
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/cgbk9dc4jg6tqvtaevqcp7ddef/mimatusonafem.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c78f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC78F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dfa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA6 11384 bytes
SHA-256: 90d9605fd80558d6ee864026702346b225cbbf1eebd0394556f4aee82c7c2bba
font_02_sfnt_off0000fa25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA25 19008 bytes
SHA-256: baf5a24ca9be4b702cbc7f7766200fb9643c29f650cb62af584e1314d32eb9ea

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