Malicious PDF — malware analysis report

Static analysis result for SHA-256 eca0da40acf59f49…

MALICIOUS

PDF

63.8 KB Created: 2021-09-06 21:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 660a3b856db4a45861f802e6ac5bcaf1 SHA-1: 71a024ed929a82af29d3338066b5e310867cc2cf SHA-256: eca0da40acf59f49692d8d4fe88fb25f98e01a5ef13a48e1f26e73559a9e5daf
124 Risk Score

Malware Insights

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

The file was detected by ClamAV as a phishing trojan. Static analysis revealed it functions as a link farm, with numerous URLs pointing to PDFs hosted on compromised CMS upload directories. These links are likely intended to lure users to malicious websites for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4239

Heuristics 5

  • 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.
  • 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://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/phddd9t2b881m6moan766edlqu/38675670672.pdf
    • https://thingstodobahrain.net/ckfinder/userfiles/files/68375208414.pdf
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/67aff1fd2587d8aff5ae44f2acdb61ea/vozapo.pdf
    • http://haenuri.net/ckupload/files/99689762282.pdf
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609224efc12bf---73025159283.pdf
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/417256020864eb9847de53a695c0a276/87612384053.pdf
    • https://oddluzanie.net/userfiles/file/nanirunenosa.pdf
    • https://bauarch.bg/files/32226791312.pdf
    • https://www.ideaklinikankara.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d14a72651b---85766992926.pdf
    • http://www.pattyn360.com/upload/forum/files/bigadosaves.pdf
    • https://testpensija.bankai.lv/ckfinder/userfiles/files/sizuwupewuwofejo.pdf
    • http://yaqeen-eg.com/userfiles/file/15732954512.pdf
    • http://ruihuitax.com/files/file/wadosebodopedewaxobamegav.pdf
    • https://locktactyuma.com/ckfinder/userfiles/files/dodajutatukabuduta.pdf
    • http://bukhatirhomes.com/userfiles/file/76858300747.pdf
    • http://daglichtfilters.nl/ckfinder/userfiles/files/35973954071.pdf
    • http://taiyoaquris.cn/upload/userfiles/files/20210703062132.pdf
    • https://mgc.to/sites/web/upload/files/duwavorazezogudujelo.pdf
    • https://chrmglobal.com/userfiles/file/31565170798.pdf
    • http://tele-video.ru/upload/files/dolixegejuj.pdf
    • https://ptogel2.com/contents//files/83331779192.pdf
    • http://cityfate.com/files/files/xosimivu.pdf
    • http://profil-metall.de/content/uploads/file/46240286809.pdf
    • http://sendedianqi.com/upload_fck/file/2021-7-7/20210707120243502831.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=capacitor+uses+and+function+pdf

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