Malicious PDF — malware analysis report

Static analysis result for SHA-256 154c080eaa739d7a…

MALICIOUS

PDF

113.9 KB Created: 2021-08-19 03:04:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: a0f1ab7ed3f245af8248845e749ee103 SHA-1: d8abf29b1b38ccab87ca1505b7c4ec36ba8f2e9b SHA-256: 154c080eaa739d7ac68d957f0026e32ce160387e5db61349dc52fb0e12f5ee5e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9438

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://philabc.ru/uplcv?utm_term=pizzazz+plus+rotating+oven+instructions PDF link annotation
    • http://camwater.org/media/files/sefurobazukatijevi.pdfIn PDF document text
    • https://eseninternational.com/uploads/files/31824246061.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1610d3e489c214---5696660500.pdfIn PDF document text
    • https://accu-split.com/userfiles/files/jigitezevirudimixegol.pdfIn PDF document text
    • https://powermailer.in/userfiles/file/nifurorinibeted.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210505110557090.pdfIn PDF document text
    • https://etadelloro.it/images/file/vojozesakiludewot.pdfIn PDF document text
    • http://anm-av.de/uploads/files/87815837859.pdfIn PDF document text
    • https://dimensioninteractive.com/WYSIWYGImage/file/97212121314.pdfIn PDF document text
    • http://rs-entp.com/upload/file/24745354489.pdfIn PDF document text
    • http://tcurryproperties.com/konadnew/userfiles/file/vewidokotozasazem.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/65968179824.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608057b822b68---tuzesiraxibobaz.pdfIn PDF document text
    • http://www.dismaplant.com/ckfinder/userfiles/files/sukasipesiwefoxorun.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/mbvaecssl7su7dueune6lh48c4/49105757713.pdfIn PDF document text
    • http://greenworx.eu/images/uploads/files/jamewox.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9bd47165be---jotamivagumenu.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ae71aa9724---29775384324.pdfIn PDF document text
    • https://10kshot.com/customerinterview/ckfinder/userfiles/files/28562583775.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161059ba2e8a44---jururivixovekuxaxid.pdfIn PDF document text
    • http://optikametuje.cz/userfiles/file/12150527466.pdfIn PDF document text
    • https://pasarantogel2.com/contents//files/lujalede.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/74c6fd1dbb7f7043e92184bf9422ca05/goxaxipulekov.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aec693a3a9a---13294980452.pdfIn PDF document text
    • https://noihoithanhtuan.com/media/ftp/file/zotazirojekitijixip.pdfIn PDF document text
    • http://mfcwestenkwartier.nl/beta/userfiles/file/63648829889.pdfIn PDF document text
    • http://christschoolblr.in/userfiles/file/malesupiwixutezemujibakel.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001402c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1402C 18208 bytes
SHA-256: c17b16dc8f58390c12e1e55c2817294d2fa9059eb41ed14827fc9f57504d929d
font_01_sfnt_off00016f9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F9A 10776 bytes
SHA-256: e55f4252638ca98990c80a9f595a03cad568480cbeb942744984cd2a35b30176
font_02_sfnt_off000188a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x188A9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001a0ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A0BA 16092 bytes
SHA-256: 9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd

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