Malicious PDF — malware analysis report

Static analysis result for SHA-256 2007fda2a80b5ba7…

MALICIOUS

PDF

85.8 KB Created: 2021-08-05 06:48:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 12dab28cffb21a049cdbb6b0f8078a6d SHA-1: 13e127e15c319b8f416c7083d874288640da7121 SHA-256: 2007fda2a80b5ba7157b294461b2c88232c13d77c10140258267055a3c96d553
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many pointing to compromised WordPress sites, suggesting a link farm designed to lead users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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.
  • 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 https://pixomot.ru/uplcv?utm_term=limiting+reactant+problems+worksheet+answer+key PDF link annotation
    • https://www.tunnel.de/files/uploaded/file/xezuzofovazefo.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c03b3485c87---tawigu.pdfIn PDF document text
    • https://cosplay-expo.it/ckfinder/userfiles/files/sotef.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/c9eac676530d69ff3f1ef6a897e5cfd7/lamifi.pdfIn PDF document text
    • http://piau-po21inn.com/CKEdit/upload/files/45406792970.pdfIn PDF document text
    • http://banghetretunhien.com/media/ftp/file/69584169218.pdfIn PDF document text
    • https://www.autodepotperformancegroup.ca/wp-content/plugins/super-forms/uploads/php/files/dgdqnk2fi1hu9f3ef1qod7aq6e/94853798176.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080f740385e5---34096759239.pdfIn PDF document text
    • https://daismene.it/file/35156746196.pdfIn PDF document text
    • https://betenenergy.com/sites/default/files/file/wawifekavulus.pdfIn PDF document text
    • https://directorvincentchow.com/fck_filemanager_upload/file/lodugifelomomupoxuki.pdfIn PDF document text
    • http://billsky.ee/files/file/lumina.pdfIn PDF document text
    • https://belhasasecurity.com/userfiles/file/25131905105.pdfIn PDF document text
    • http://kmkonsult.cz/userfiles/file/37879279255.pdfIn PDF document text
    • https://editions-tlp.fr/ckfinder/userfiles/files/61669108651.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/21badcd23b970c2662317d5987af3a1d/58158817927.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/97d097b714ddb0aa67943dae7007f62c/wimavivuzivikabuwovejis.pdfIn PDF document text
    • http://industrialdevices.in/uploads/zorovudiwuninu.pdfIn PDF document text
    • http://www.associatedomains.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085029ce9315---54332224632.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d22c2de530---37596110802.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b0d09f27510---wuramumagewilanixasadabep.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/16079a94c60bcf---webokejoxo.pdfIn PDF document text
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160a3d83a05130---zelojidiwulagizawakikas.pdfIn PDF document text
    • http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070f541b8e8b---918968829.pdfIn PDF document text
    • http://whs1963.com/clients/7/75/758a827d59fb1c2827eec60421ffdc22/File/97489290002.pdfIn PDF document text
    • 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_off0000ebb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB9 11208 bytes
SHA-256: 2b4dfa74ca5d3371b36a253ac7bf553818ef1959f82363c2822aa6d6348ea662
font_01_sfnt_off0001059b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1059B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DAD 16516 bytes
SHA-256: ae725ae253996670a8a72b4edc8d2ebe1eef8fc4786dcca64d6b8e0d37f1b488

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