Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e2a03fe680059f…

MALICIOUS

PDF

85.7 KB Created: 2021-08-04 10:43:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: 1d130b14e54b1c4c693c774c1579be43 SHA-1: 8ec742461caa908f4f28a70109ac55d4e0cdc2b7 SHA-256: 02e2a03fe680059f4016282550619ac98c0ff9ae8c336704577d66d0e531c09b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF document contains numerous embedded URLs pointing to various websites, many of which appear to be compromised CMS uploads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of a 'link farm' heuristic further supports the attack pattern of directing users to external, potentially harmful, sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://synerhu.ru/uplcv?utm_term=%C3%BCniversite+%C3%B6dev+kapa%C4%9F%C4%B1+%C3%B6rnekleri+word+indir PDF link annotation
    • https://carea2plus.com/wp-content/plugins/super-forms/uploads/php/files/648ca0615def82a2ba8e2d0b8225b528/woniladugatedenupavibamu.pdfIn PDF document text
    • http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/9siiucjs8kds95093onbih4lq5/10228284079.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a0061865a9d---2432671884.pdfIn PDF document text
    • http://bichvan.vn/upload/files/28825635079.pdfIn PDF document text
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072682589087---rejumixelolanitili.pdfIn PDF document text
    • https://mariellatriolo.it/public/file/raxamezovujurexafazo.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/3a3160ec9986f15905329c9a0b7bc923/11436598795.pdfIn PDF document text
    • http://www.associatedomains.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084810f6e670---44024881250.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/27469405cdb999fa467c19fec988c71a/vavunekoguwufipuzuzo.pdfIn PDF document text
    • https://visualmotion.nl/uploads/file/guwiwogofubufejutezafu.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160908fdd75bd7---92993117333.pdfIn PDF document text
    • http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbb5f51fc3---xazuzawozogetikavefaja.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/4419fd5a249ce8bbf3b755759459dfa7/koponimurixodumi.pdfIn PDF document text
    • https://journeywithmypet.com/ckfinder/userfiles/files/koranokenisifebetug.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dac47904f5---76478087840.pdfIn PDF document text
    • https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b41eef2ebf---57869113384.pdfIn PDF document text
    • https://pharmnet.cz/ckfiles/files/files/loluzasivakinomutufuwuz.pdfIn PDF document text
    • https://mogilew.ru/userfiles/file/gatetejixexowugetudesa.pdfIn PDF document text
    • http://funperm.ru/content/file/miloj.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/34336124263.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_off0000e65b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fe72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE72 11228 bytes
SHA-256: b35dbaf8aea380d10037b15a01f1ab5cd88a6cd815cd861c8f585afdd9c99a7d
font_02_sfnt_off00011826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11826 19032 bytes
SHA-256: ca8e59c71ed98892e33864a3fe827344c05edc0ec0decef65aeeaf02c45d96e0

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