Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2622af1b8e04c72…

MALICIOUS

PDF

48.0 KB Created: 2021-10-04 08:06:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: bbfc07c1044ace8786f66c4012f4152f SHA-1: 25ee817b929687c362094b8752053d99090ff794 SHA-256: c2622af1b8e04c72a153b2eb7d219881e39dc8a79fac77ead14d4627ebfe3305
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample was detected as malicious by ML classifiers and ClamAV, specifically flagged as Pdf.Phishing.Trojan. It contains numerous embedded URLs pointing to a link farm hosted on disposable domains, indicating a phishing or malware distribution attempt. The PDF structure and numerous external links suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7449

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://blankheich.de/images/uploads/file/64987029895.pdf In PDF document text
    • http://geoplan.su/userfiles/file/75806826602.pdfIn PDF document text
    • https://yarpaket.ru/userfiles/file/53019061708.pdfIn PDF document text
    • http://nfc-lampang.com/user_img/files/9173399224.pdfIn PDF document text
    • http://xn--72c7caerxx0d3a9eve.com/UserFiles/File/6394604903.pdfIn PDF document text
    • https://vongtaytramhuong.vn/upload/files/bowojisesoveborataledar.pdfIn PDF document text
    • http://veewood.com/file_media/file_image/file/45324605946.pdfIn PDF document text
    • http://i-p-p-c.com/ckfinder/userfiles/files/vusifodixi.pdfIn PDF document text
    • https://aimtronu.org/userfiles/file/22943014283.pdfIn PDF document text
    • https://nomaquito-travel.com/editor-images/varobizigutugarefizek.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/92d8402861de7aea7df7234554443867/14915489997.pdfIn PDF document text
    • http://i-physiology.ru/upload/rebosakide.pdfIn PDF document text
    • http://asude.istanbul/ck_images/files/depexelixiv.pdfIn PDF document text
    • http://thienlongadv.com/upload/files/86150402650.pdfIn PDF document text
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/11e0ae4b95ab679c534ae60f31191ef7/48903687381.pdfIn PDF document text
    • http://vipdiler.ru/files/file/38497461559.pdfIn PDF document text
    • http://architettomontanino.eu/userfiles/files/kezatukafolowazuj.pdfIn PDF document text
    • https://samirkumarpaul.com/ckfinder/userfiles/files/42270921728.pdfIn PDF document text
    • http://atomicattack.com/atomic/fckimages/file/47914600864.pdfIn PDF document text
    • http://www.anclupnapoli.it/userfiles/file/93862335143.pdfIn PDF document text
    • http://www.gabrielamaciel.net/images/content/file/rosokamoxalomoj.pdfIn PDF document text
    • https://betenenergy.com/sites/default/files/file/sobutovosoxinudugix.pdfIn PDF document text
    • https://postelezmasivu-zlin.cz/ckfinder/userfiles/files/torevojajogutirad.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=number+of+full+time+equivalent+employeesPDF link annotation