Malicious PDF — malware analysis report

Static analysis result for SHA-256 46c55dd3731f2982…

MALICIOUS

PDF

40.2 KB Created: 2021-09-17 06:24:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5b7c168094897893e579a9443e8f562d SHA-1: ff6147784d434637ac7ba364398e93ebe86e599d SHA-256: 46c55dd3731f2982ae806ae594ad918ad854ded8ae089674bc6f37272d5c08a7
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by multiple heuristics and a machine learning classifier, and is detected by ClamAV as Pdf.Phishing.Trojan. The document employs a common phishing lure by presenting a screenshot to trick users into interacting with it, likely leading to the download of a secondary payload from one of the numerous embedded URLs. The presence of embedded JavaScript further suggests malicious intent, potentially for exploitation or obfuscation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9455

Heuristics 7

  • 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 40 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.
  • 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 https://zegaoyun.com/calisma2/files/uploads/95633273624.pdf
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613383d0573fc---jumugogat.pdf
    • http://myphamasia.net/upload/files/pamizewibuvoxarojefu.pdf
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/aa68efc8d62c7a82504384a76a9cf63d/68057791358.pdf
    • http://kuhomania.ru/ckfinder/userfiles/files/vukab.pdf
    • https://gameadvisers.com/js/new/fckeditor/userfiles/file/9386981352.pdf
    • https://www.hs-hofgastein.salzburg.at/ckfinder/userfiles/files/paxunikut.pdf
    • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/f3912440029b0d02df4e2e3b429150a4/xepefutenorugejirojo.pdf
    • http://lex-ter.ru/admin/ckfinder/userfiles/files/99598793211.pdf
    • http://serdceprirody.ru/userfiles/file/65541621363.pdf
    • http://psychanalyste-gard.fr/ckfinder/userfiles/files/17703114564.pdf
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/161386bf6ba315---kimisimawukeneluxe.pdf
    • http://www.egavilanes.com/ckfinder/userfiles/files/widex.pdf
    • http://learnazia.com/fck/imagesfile/15290113066.pdf
    • https://vibanghanoi.com/uploads/files/tojorewasuwolavi.pdf
    • http://deaprogettazioni.it/userfiles/files/23682887354.pdf
    • http://www.agot.pl/upload/file/82704410071.pdf
    • http://squash-fitness.cz/userfiles/file/74693206120.pdf
    • http://tatnhapkhau.com/ckfinder/userfiles/files/21871490046.pdf
    • http://zhongjiukeji.com/upload_fck/file/2021-9-4/20210904173551161397.pdf
    • http://jysfh.com/upload_fck/file/2021-9-6/20210906111242185607.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=cast+phone+to+tv+via+usb

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