Malicious PDF — malware analysis report

Static analysis result for SHA-256 10dc8933fba42f56…

MALICIOUS

PDF

46.8 KB Created: 2021-09-29 13:17:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 8b6d8f942563250dceabd9032463fc22 SHA-1: 7650f5c15e2450a84ceaa45f4464685c1f95cdb6 SHA-256: 10dc8933fba42f56a61999530faa612fcb9048487066a19f24da01222dab2234
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF exhibits characteristics of a phishing lure, including an image-heavy design and clickable links to external URLs. Heuristics indicate it's an image-only document with an action trigger, typical for disguising malicious links. The presence of multiple external URIs, including one pointing to an IP address, further supports this. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6441

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 2 text block(s), carries a click-outward action, and is only 46 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://huntic.ru/uplcv?utm_term=cod+mw+1+torrent PDF link annotation
    • https://qfuse.it/images/uploaded_files/ckfinder/files/1631508237_d9285b2d0f.pdfIn PDF document text
    • https://xn--90ah6akb9e.xn--p1ai/f/file/mevigetazibanagisaxipu.pdfIn PDF document text
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/57df4f9aca0c088decbdf7a7fc08c47b/27017149665.pdfIn PDF document text
    • https://panoramamall.bg/ckeditor/ckfinder/userfiles/files/xegikejebesoxegani.pdfIn PDF document text
    • http://cainghienbinhduong.com/uploads/userfiles/file/68594748635.pdfIn PDF document text
    • http://tizianaiberti.it/userfiles/files/guradoxepaber.pdfIn PDF document text
    • http://uspeh-kursk.ru/ckfinder/userfiles/files/80468459080.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1614fac67bce1b---weviterimosakinavaref.pdfIn PDF document text
    • https://fereshtegan.net/basefile/fereshtegannet/files/zatulo.pdfIn PDF document text
    • http://softwaretesting.kr/club/data/userfiles/file/20210912042051.pdfIn PDF document text
    • http://archissimo.eu/userfiles/files/pivibijetixazujeb.pdfIn PDF document text
    • http://211.129.1.225/system/ckfinder/userfiles/files/7429982574.pdfPDF link annotation
    • http://tai-group.com/upload/files/28174418782.pdfIn PDF document text
    • https://ketex.com/trcgp/ckfinder/userfiles/files/69531835131.pdfIn PDF document text
    • https://qfse.co/images/uploaded_files/ckfinder/files/1631589579_ce265fe047.pdfIn PDF document text
    • http://tce.vn/imagesflashupload/file/xemotebewatenigi.pdfIn PDF document text
    • http://galluccifaibano.com/userfiles/file/59716043254.pdfIn PDF document text
    • https://eyetracking.pl/userfiles/file/pigosagojowagig.pdfIn PDF document text
    • https://numen-wow.com/userfiles/cloud/files/35299357504.pdfIn PDF document text
    • https://ofertaromania.ro/ckfinder/userfiles/files/mojoxadugosaxezunusaz.pdfIn PDF document text
    • http://szao-spb.ru/images/news/file/fitevukimeleze.pdfIn PDF document text
    • https://toscanafantastica.com/userfiles/file/vujozejodakagekipax.pdfIn PDF document text
    • https://excore.hu/ckfinder/userfiles/files/16180983866.pdfIn PDF document text
    • https://jobtiara.com/files/files/gokiwoto.pdfIn PDF document text

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