Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ad1ccd5f724ddf7…

MALICIOUS

PDF

85.9 KB Created: 2021-07-17 08:12:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 185bfc0d610dfb31353458390b66e1bd SHA-1: dabe64bde778097176b9d9a37dde4773a68055f3 SHA-256: 0ad1ccd5f724ddf7116c6aa8d80b9bac70025d0147009acb975c84ec7114073e
164 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document contains numerous links to compromised CMS upload directories, suggesting it is part of a link farm designed to host malicious files. The presence of a 'download' button lure further supports a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9848

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/7fe51d8d02acb4bff47480627191b71d/bosusuzalibiwujotofopeva.pdf In PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b075c280dc9---81361744949.pdfIn PDF document text
    • http://fotografoenricogiampieri.it/userfiles/files/komexedoxovefi.pdfIn PDF document text
    • http://bephoangdung.vn/uploads/ckfinder/files/fabowekulipaminipesop.pdfIn PDF document text
    • https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/484bdd3dbf1bf17877b28334ffbe41e7/modaluvegejesapesolavuka.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16084df1ad06ef---73161478976.pdfIn PDF document text
    • http://www.hydro-tg.pro/upload/file/25033157047.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a15b7fc1551---4773053091.pdfIn PDF document text
    • http://akicgiyim.com/userfiles/file/vagafeneg.pdfIn PDF document text
    • http://goodwill.as/userfiles/file/bimazekibijuwoda.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/707k54lm5s6da7e55fp4gj6bl5/xonubokudekar.pdfIn PDF document text
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/kib5emadk3jcca0ki566jaq7cb/61544623196.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/c4f6e977e5a08cb52e44653090f72720/7694660538.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091d0c316cd7---navowujimilugi.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e124a4318a---33061403233.pdfIn PDF document text
    • http://pamat.ro/UserFiles/file/76210180499.pdfIn PDF document text
    • http://www.annaleehuber.com/content_files/file/busasul.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/b88af9a6f3f997aa49eb0d3681832bb5/lixufowutovux.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160b43eefd15ed---84840810603.pdfIn PDF document text
    • http://pcccphucvinh.com/upload/files/79754252308.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/g8904s2cnk2jk4tds5h47poqc4/56811767385.pdfIn PDF document text
    • http://yaqeen-eg.com/userfiles/file/74323327699.pdfIn PDF document text
    • http://avanti-kuhni.ru/upload/files/vigokiradidiberagen.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/h024mgj4rfvm3km9vjrgtg89qd/74760927083.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ecbe4759eb---88460031076.pdfIn PDF document text
    • http://delvalle68.com/clients/54584/File/wovivuxudigokagarojub.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=warcraft+iii+free+downloadPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0CD 10380 bytes
SHA-256: 6db1c8e78e624a63a72d6aa677d39a10ae305512a99a81f4b34511431e14438b
font_01_sfnt_off0001086f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1086F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12081 16292 bytes
SHA-256: 67526f634413cef05300004f501e0c38f931d53ce066bc0c8815d89f846f04ce

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