Malicious PDF — malware analysis report

Static analysis result for SHA-256 c87b4214117fcc17…

MALICIOUS

PDF

90.0 KB Created: 2021-06-30 09:02:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 7132fe3a838f133107abcba2bc5856e0 SHA-1: 91b2b358a8ae43213d7cfa3a0099b37f287a0eba SHA-256: c87b4214117fcc1764434f05ef7704e4d552a07fa9060e04b7c7a36914535a89
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document functions as a link farm, directing users to various compromised websites and disposable hosting domains, likely to facilitate the download of malicious content. The presence of numerous external URIs and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicate a phishing or malware distribution attempt. No scripts were extracted, but the overall structure and URL patterns are consistent with a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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=into+the+blue+hollywood+movie+free+download PDF link annotation
    • https://pelicanfinancialnetwork.com/ckfinder/userfiles/files/46695528978.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c08407eec12---luxalinejukaki.pdfIn PDF document text
    • http://ambulanceservice.pl/userfiles/file/gubirurokukanororukopado.pdfIn PDF document text
    • https://cambodiadriverservice.com/userfiles/file/vamozigodizusuzapojapatu.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/fbe997ab892f50a6bd14f28e3e3646d8/kojalubu.pdfIn PDF document text
    • http://tfh-filter.hu/_user/file/pijikopitasobutexusova.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609107594bf3b---rowomu.pdfIn PDF document text
    • http://kokocurry.gm/userfiles/file/dobadupagirapunanatep.pdfIn PDF document text
    • http://vytvarnyobchod.cz/UserFiles/File/sivejonafusi.pdfIn PDF document text
    • https://aartipalette.com/userfiles/file/fijodososugum.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/90a09100d88dd35f215dd366b91349a9/mozakoditeneraso.pdfIn PDF document text
    • http://abwingssuffolk2.com/uploads/files/13351415024.pdfIn PDF document text
    • http://hani-bee.com/userfiles/files/wadetetiruzi.pdfIn PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1608195313392c---41647823711.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cad6b05a81---7557862420.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fde2ad7c8c---28918580432.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6cc66edb50---57181828226.pdfIn PDF document text
    • http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160963fb904449---28471984856.pdfIn PDF document text
    • https://anfauglir.com/images/file/1279360260.pdfIn PDF document text
    • https://waroproject.com/file/68238961155.pdfIn PDF document text
    • http://mobilenmr.com/files/files/zaper.pdfIn PDF document text
    • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/4c330462cbd78449d9767aa015a571e7/zenilevezepokitonulelobur.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e4abad86e6---viwolosokumewa.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD4 17740 bytes
SHA-256: 69856c8aac4766a0e4a08ab3aedd879e352f37ad7919dc83932144ad1610d697
font_01_sfnt_off00012972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12972 10908 bytes
SHA-256: 84f47e30156edc647646dc1e953e63cc98208dd93ffe3ded5a2afc857b2bebd8
font_02_sfnt_off0001427d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1427D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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