Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae2200863b792005…

MALICIOUS

PDF

90.7 KB Created: 2021-07-26 21:58:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 1d3e25ee4902cb995e757693ebbe46d7 SHA-1: 1f6bd8ffaba7750a511da9002ae575d3cba16c89 SHA-256: ae2200863b7920059a8ca81bcdd8bbbc91a93471823171dff3f1034130f0da02
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised websites and disposable hosting, suggesting a link farm designed to lure 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 link farm behavior are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/dc38eb7dd83481f32accbd359ba2a7e4/rewik.pdf In PDF document text
    • http://ddservice-bmw.pl/userfiles/file/4595742630.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2d6f1a1e4d---bugolerilanuwuxagixenijo.pdfIn PDF document text
    • http://allprintusa.com/admin/images/file/mowenuzolu.pdfIn PDF document text
    • http://thegibbsfamilyreunion.com/clients/d/d9/d929505c7faf6263097cc97620c39d65/File/45257705793.pdfIn PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160b82b70cb245---51505705890.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/fd3a6592d4c748abfd14a4076e8f4fcb/vefopetapexexagazasosa.pdfIn PDF document text
    • http://cesmclassof68cheyennewy.com/clients/82478/File/71761977681.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/o1kv4g9tm7jf49po8grlsqgeo7/nizorim.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ec9d66014f3---19417153010.pdfIn PDF document text
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/10170fa177d7fb5e27e1eb88b3ef8344/pakifuwom.pdfIn PDF document text
    • http://ifaistos.reality.gr/~triantaf/images/file/bijamasukubogeka.pdfIn PDF document text
    • http://ankaser.com/userfiles/file/10544439507.pdfIn PDF document text
    • http://a-kamen.com/userfiles/file/dukagax.pdfIn PDF document text
    • https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/77687dbd925cc3c4b430ec67ef2dafed/natamivitupiridewanowipip.pdfIn PDF document text
    • http://mashhadgardi724.ir/basefile/mashhadgardi724/files/liladis.pdfIn PDF document text
    • https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/4a2d67b9c6cc0fbdeb240bad0d0d9934/wuvakositemoxe.pdfIn PDF document text
    • https://kovtec.pl/eurostyl/photos/file/38216577851.pdfIn PDF document text
    • http://18554080.com/userfiles/file/jimaxut.pdfIn PDF document text
    • https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/fme9j3tks3ckd6a1b6tsr7a766/gadakisaxinusuzosupe.pdfIn PDF document text
    • http://chinazzjx.com/d/files/25433222615.pdfIn PDF document text
    • https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/8f76edb8d63367132533a00504c4c777/33640853145.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/peft736gkfkme5mffu9bifcmu3/74655823628.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=phoenix+rc+crack+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_off0000fcc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000114d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114D9 18292 bytes
SHA-256: 553e94b6da926ee8166015fd3258f2a2a57eade05ace6731ca3a50c55da93a75
font_02_sfnt_off00014462.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14462 10484 bytes
SHA-256: 4dd072cb421c36d939815f3d2c4677dceabd95ae1b765877224fbac0cb63af83

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