Malicious PDF — malware analysis report

Static analysis result for SHA-256 c794e614dd47e287…

MALICIOUS

PDF

78.5 KB Created: 2021-08-25 12:29:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 8b51120e9d80fa350294f42f302fada1 SHA-1: de98a2306879b83bfc293667a1951c3e0cce36c9 SHA-256: c794e614dd47e287e63ca41cee03bd8f04905bbcbad9d62dd43a8e32e54ba4fe
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous embedded URLs pointing to compromised WordPress sites and disposable domains, indicating a link farm designed to redirect users to malicious content. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The presence of these links suggests an attempt to lure users into phishing scams or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5999

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://philabc.ru/uplcv?utm_term=i+could+never+forget+you PDF link annotation
    • http://aquamedia.cn/ckfinder/userfiles/files/22575858818.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d3cde71f22---mejuripagaxomada.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bfc96838dc7---lozefutob.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0d4435543a---powapajasoj.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/2c30a37f0d35c154c59624fefc487917/25322960482.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608687cab9658---fixoviji.pdfIn PDF document text
    • https://retta-bg.com/userfiles/tudaxafiletelulozisusid.pdfIn PDF document text
    • http://gfzgt.ch/upload/file/70543596505.pdfIn PDF document text
    • http://savitapiti.org/ckfinder/userfiles/files/27278856135.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/h43g7d3qcsm7gkrq4dgiu1dgk2/valitedumumudozumuwowajok.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071b09395ca3---82550261011.pdfIn PDF document text
    • https://certifiedcollisionrepair.com/home/cert/public_html/ckfinder/userfiles/files/nabodevoba.pdfIn PDF document text
    • https://dewalt-naradi.cz/media/upload/editor/file/pibepetanogamo.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096afd508405---60008133252.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160f1d317ad546---bibuwi.pdfIn PDF document text
    • https://thefertilizergranulators.com/d/files/fumabumojexekuvuk.pdfIn PDF document text
    • http://ambiance-cinema.fr/wp-content/plugins/super-forms/uploads/php/files/b99b1f5e6aee8e8b8911ba9442955cff/5248578876.pdfIn PDF document text
    • http://xn--b1adbbbaeqjtsflbfms0e.xn--p1ai/pict/file/84118767323.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160bfc71ef367e---watototaram.pdfIn PDF document text
    • http://akicgiyim.com/userfiles/file/45563014490.pdfIn PDF document text
    • http://suachuaspa.com/upload/images-content/files/banizezijinixofesubos.pdfIn PDF document text
    • https://csodamalom.hu/files/files/wonofujotejene.pdfIn PDF document text
    • http://benetworkingpro.com/ckfinder/userfiles/files/52685678507.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/c016ac04c164a66571372aa42e9a7a1b/lamirutexupevus.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11094 10460 bytes
SHA-256: ff2ee4beac4c5876fe0551c279d27b6ffc447e939494e00535bb0b90d95598ea

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