Malicious PDF — malware analysis report

Static analysis result for SHA-256 47521a4cc252de84…

MALICIOUS

PDF

83.8 KB Created: 2021-09-07 18:19:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 6ad2794f3b16f928db81081f6626967f SHA-1: 494e905e11187e623bbf46dcc1059715c95b1c15 SHA-256: 47521a4cc252de84fad00436945d9952573a4c36746fdc19eccaac4302fb96d4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links to external websites, many hosted on compromised CMS platforms or disposable hosting, suggesting a link farm or phishing lure. The presence of external URIs and the overall structure point towards an attempt to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://queure.ru/uplcv?utm_term=create+pdf+from+excel+range+vba PDF link annotation
    • http://geometrabottero.it/userfiles/files/87068614713.pdfIn PDF document text
    • https://langumeistras.lt/i/File/gijibeta.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/161273ccc6f64a---zikovuvarufodologusudolaz.pdfIn PDF document text
    • http://toyotacri.com/userfiles/files/sekemido.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/xawurejunonapamesaj.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d9e51bd3915---wenubuxawexanu.pdfIn PDF document text
    • http://keralajesuits.org/userfiles/file/41035704978.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/3ivoaipnct8c7a962q2iohlva8/18573613024.pdfIn PDF document text
    • https://bandai-k.com/userfiles/file/tidusinasokuzixig.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1608e9f2217618---demuronogasa.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/0075acbd109fe90aa6d9f33ff0248158/napagipopaborotos.pdfIn PDF document text
    • http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/0654bce905fe6a2fe79c180cd4cd200b/46350351880.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/161105e7d4aed8---sewukisukaxunif.pdfIn PDF document text
    • https://apartmani-mestrovic-krk.hr/files/26446189013.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606f956238288---65859285793.pdfIn PDF document text
    • http://schroniskoorzechowce.pl/ckfinder/userfiles/files/46658541798.pdfIn PDF document text
    • http://kythuatviet.vn/uploads/userfiles/file/97117854778.pdfIn PDF document text
    • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/62a5347e26b5eedde8c4146cc012792e/73833088581.pdfIn PDF document text
    • http://grawerlik.pl/userfiles/file/13140176674.pdfIn PDF document text
    • http://liffeyartefacts.com/fckimagefile/file/34588355125.pdfIn PDF document text
    • http://konditsionery-reutov.ru/upload_picture/file/97883320131.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160728d87b4622---jefijokexapuramar.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/d841ebcaebaeb62893b2de1989a4a3cf/45374010887.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_off0000e458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE458 16928 bytes
SHA-256: 425bde7b604cec841a9a5e21253e054c0c0933848338ff3f434d0f88e60898cf
font_01_sfnt_off00011023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11023 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001283a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1283A 11040 bytes
SHA-256: 868022942db8e4f47929712536204323cf351d9402920f476564969dca84710c

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