Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2bb5d3e9bd035f…

MALICIOUS

PDF

41.5 KB Created: 2021-09-08 21:58:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: bf711d73ef3b8878910d04befbc230a2 SHA-1: c3a7ea6c4039d8351aa87d23ccb4c7a7270fb7b6 SHA-256: af2bb5d3e9bd035fc8165b6e6572013e54b62b18266b92bb89c4b7a7f4183669
174 Risk Score

Malware Insights

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

This PDF document is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains an image-only interface designed to trick users into clicking a link, which redirects to a compromised CMS upload or disposable hosting. The numerous embedded URLs suggest an attempt to distribute further malicious content or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6714

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 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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
  • 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://police8coop.com/UserFiles/file/85435365452.pdf In PDF document text
    • http://tomekorea.com/userData/board/file/91990815888.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/a85ca7c60030501612661842ac0570b5/vikozop.pdfIn PDF document text
    • https://doluhosting.com/calisma2/files/uploads/najawexaluve.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/161369ddfd0623---zulawunedosotez.pdfIn PDF document text
    • https://malmospelmanslag.se/userfiles/file/zowagipabimidapedananejo.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/18c67baa0eecd7b41bd4afd604501e3f/femonotivobemanar.pdfIn PDF document text
    • http://tasarimak.com/ckfinder/userfiles/files/78127241220.pdfIn PDF document text
    • http://studiomuraca.eu/userfiles/files/joruzosetidalafuru.pdfIn PDF document text
    • https://martensmgt.com/business_school/uploads/file/besugeloxowujivekodepi.pdfIn PDF document text
    • https://tvsporedi.si/vsebina/dosezilisameve.pdfIn PDF document text
    • http://mabo-meccanica.eu/userfiles/files/52904864314.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136e50506d0f---lukizema.pdfIn PDF document text
    • https://yukkumpulgroup2.com/contents/files/pivapanexuri.pdfIn PDF document text
    • http://qlinairnv.be/userfiles/file/99272730137.pdfIn PDF document text
    • http://scandinavia-ex.com/images/blog/file/kigivelujilezaxujilutute.pdfIn PDF document text
    • http://maasmartcity.com/userfiles/file/zazevagepuzi.pdfIn PDF document text
    • http://togclick.com/media/userFckfiles/file/likakejafabarapezasu.pdfIn PDF document text
    • https://tempegaring.com/contents/files/tinusenolozopile.pdfIn PDF document text
    • http://qianxi.cn/filespath/files/20210903102846.pdfIn PDF document text
    • http://emiem.pl/public/upload/ckfinder/userfiles/files/19187104010.pdfIn PDF document text
    • https://szekszardportal.hu/userfiles/file/62765904008.pdfIn PDF document text
    • http://ramenhajimetustin.com/uploads/files/34490139278.pdfIn PDF document text
    • http://xn--2e0b30g3uq7pay7m.com/upload/fckeditor/file/siwesoguges.pdfIn PDF document text
    • http://inistor.com/ufiles/files/67593372013.pdfIn PDF document text
    • http://bbfrontedelmare.com/userfiles/files/tatuzaminu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=minecraft+maps+mcpePDF link annotation

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