Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5406fee2a2e7374…

MALICIOUS

PDF

46.3 KB Created: 2021-09-21 05:14:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 31337ca8ea725ed6590e24d641a84887 SHA-1: 98c8bee445b61fa121ff650886e103651a505657 SHA-256: d5406fee2a2e7374fc75dda95c7157fff9155cd980e323499b0835706adcd501
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external links, many of which point to compromised WordPress upload directories or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using numerous distinct hosts with a single link each, a common tactic for evading detection and distributing malicious content. The embedded JavaScript, though not fully detailed, is a common vector for exploiting PDF vulnerabilities or initiating further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6210

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://italianopizzeria-pg.com/uploads/files/diforekaxabifug.pdf In PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/dfe110e96e6096f902068a6944636f84/dovovujeduzujokokunumekid.pdfIn PDF document text
    • http://ropesadventure.com/d/files/69373456900.pdfIn PDF document text
    • http://gdgom.com/upload/file/210918155314491886iopzs7p0g0c1.pdfIn PDF document text
    • http://petrduchek.com/files/sarovema.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/876mkp3f5e0t0pbkarstc2470q/jenikat.pdfIn PDF document text
    • https://bodzlomu.com/userfiles/file/mesazelapudisosupulo.pdfIn PDF document text
    • https://alkirbilaw.com/userfiles/files/dixewevikozakam.pdfIn PDF document text
    • http://addisonplaza.abwingsmd.com/uploads/files/sojebipiwovudukewe.pdfIn PDF document text
    • http://zamaro.cz/images/fcke_files/file/73233770155.pdfIn PDF document text
    • http://deshdunya.com/blogimage/file/pevogabinuvetatetig.pdfIn PDF document text
    • http://dungcucaytrong.com/images/files/27499885427.pdfIn PDF document text
    • http://srihemkuntschoolint.com/slbdavbatala/userfiles/file/88261599804.pdfIn PDF document text
    • http://jfac.kr/ckfinder/userfiles/files/3182116099.pdfIn PDF document text
    • http://tajesink.com/Uploadfiles/files/rinokujaponipoxevi.pdfIn PDF document text
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/3cm16fo95g1958rejos88qd1m2/47421433142.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cb6e7cb3f8---wofudaposefexa.pdfIn PDF document text
    • https://kheops-so.fr/ckfinder/userfiles/files/91136742454.pdfIn PDF document text
    • http://lexprikson.com/admin/style/images/userfiles/file/botibikevo.pdfIn PDF document text
    • http://xn----gtbercbfedtm3b.xn--p1ai/admin/ckfinder/userfiles/files/gubizevasujunira.pdfIn PDF document text
    • https://hopclickhospitality.com/scgtest/team-explore/uploads/files/95202752193.pdfIn PDF document text
    • http://xn--c1aejbdnke.xn--p1ai/admin/ckfinder/userfiles/files/jejojuvofidufapodar.pdfIn PDF document text
    • http://www.leads-bd.org/app/webroot/js/ckfinder/userfiles/files/52535358337.pdfIn PDF document text
    • http://cheniou.handysociality.com/upload/files/88788516848.pdfIn PDF document text
    • http://arebiatours.com/uploads/files/35176231328.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=layer+5+sessionPDF link annotation
    • https://easyown.ddproperty.com/datas/files/fajedekefojegusab.pdfIn PDF document text

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