Malicious PDF — malware analysis report

Static analysis result for SHA-256 e44cb3d604c6455c…

MALICIOUS

PDF

61.0 KB Created: 2021-10-15 14:50:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 2784bf3c3da62c66f1d5e07941478862 SHA-1: 3261183195b6f7162683d1a50acb9c8f7afbc0a5 SHA-256: e44cb3d604c6455c2fa953229f6952a147d89d6ea48e8afee885a0c12d4955bd
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous embedded URLs, many pointing to suspicious domains, and one identified as a link farm on disposable hosting. The PDF structure and embedded content suggest it is designed to redirect users to potentially harmful websites, likely for further exploitation or credential theft.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7490

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://cuacuonbentre.com/upload/files/83578773885.pdf In PDF document text
    • https://bluetact.com/locktactyuma/userfiles/file/6206677998.pdfIn PDF document text
    • http://massimomoroni.it/userfiles/files/xitovo.pdfIn PDF document text
    • https://www.marjojaspers.nl/ckfinder/userfiles/files/rogovuxederupujidedum.pdfIn PDF document text
    • http://tabletopad.com/images/file/19723521234.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/16159e80754f4a---wibufugeraziw.pdfIn PDF document text
    • http://parentini.it/userfiles/files/89807820099.pdfIn PDF document text
    • http://swiftnb.com/ckfinder/userfiles/files/vafeloxivafobogaxanetosub.pdfIn PDF document text
    • http://jikaramen.com/uploads/files/gajuxikaruluvawo.pdfIn PDF document text
    • http://didaconcept.com/admin/fckeditor/file/saboxavuzixitoginevag.pdfIn PDF document text
    • https://hum639hb2-hh38.com/contents/files/35710550102.pdfIn PDF document text
    • http://vinhomeshaiphong.net/app/webroot/img/files/xifuzabutoliguxatanirekif.pdfIn PDF document text
    • https://solidpractise.com/files/userfiles/file/90896824087.pdfIn PDF document text
    • http://zpkprzemysl.pl/ckfinder/userfiles/files/kewewakaxiwogamala.pdfIn PDF document text
    • http://pescepiana.eu/userfiles/files/lururufereg.pdfIn PDF document text
    • http://grafiport.com/userfiles/file/96595837854.pdfIn PDF document text
    • https://onderhoudnlgarantie.nl/upload/file/57733663903.pdfIn PDF document text
    • https://kfmaccounting.com/webroot/img/content/files/1547234645.pdfIn PDF document text
    • http://ukonlinedirect.com/userfiles/files/15802406361.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16134302d8b1b2---xokusigelovadidab.pdfIn PDF document text
    • https://chingchia.com/uploads/files/202110041003551690.pdfIn PDF document text
    • http://somkuthyoptika.hu/editor_up/73450049374.pdfIn PDF document text
    • http://cib.lin1.ca/phpsites/vertical_living/uploads/file/lurumeximutiperaximuxiki.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/BcFPVxLj4jw/uplcv?utm_term=formal+letter+writing+format+cbse+class+11PDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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