Malicious PDF — malware analysis report

Static analysis result for SHA-256 32f2da5bba039393…

MALICIOUS

PDF

100.0 KB Created: 2021-06-25 20:56:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 2c7f74afd75d5298f94624d2762aea93 SHA-1: fbe799536a61b942e9ee68a361ec54df3f179ff9 SHA-256: 32f2da5bba039393b2c1b6e6b5703edae8b69949f4435d84abe20804c863f47d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the structure and URL patterns are consistent with a malicious PDF designed to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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 http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b744fb2fd1b---16515176445.pdf In PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/4c0ce08e248566587efe79c1b4e924f8/5602645604.pdfIn PDF document text
    • https://webtechnocrats.com/upload/file/xuwenetejivewamunavuwub.pdfIn PDF document text
    • http://musorcentrum.hu/files/article/file/84203786570.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4e3950687c---pimidasevolixidetapivix.pdfIn PDF document text
    • http://provia-events.de/pics/fotos/1/file/dofojisavigi.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/fij54903679cb148ep509c79m1/66680162190.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607c8559bc0d0---fokizogugirezuvedorone.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/i626q70v61ij9qpc2bivk35f8n/92172870701.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/0d215b7d1b7b076bf308fe38e3b8eb93/22912688280.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/2b46ba6d2467b984e5c5add3b40117b9/2230588422.pdfIn PDF document text
    • https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/gmbs7r9t7pm15h71kphltg7d56/sokubasoweselitos.pdfIn PDF document text
    • http://livinglearningandworking.org/clients/e/e0/e05af8355f71d8da3aa90f500b9284b3/File/guvesefoximekelolamuzigo.pdfIn PDF document text
    • http://phantasos.org/userfiles/file/jokomodowudisaxepaw.pdfIn PDF document text
    • https://autoandtruckrepair.net/nbloom/fckuploads/file/40385407341.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/16078dab667930---gowamedopawinomi.pdfIn PDF document text
    • http://fly.no1-yes.com/userfiles/file/31423663439.pdfIn PDF document text
    • http://www.psoevalledeabdalajis.es/ckfinder/userfiles/files/fidotoduzovenelege.pdfIn PDF document text
    • http://consoles-a-gagner.com/fckeditor/userfiles/file/kavinubigijelewilivopokim.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bafbaccbb01---23822282343.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adbb902989b---99524035119.pdfIn PDF document text
    • http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1607276ba75a6d---diwubiberizijoluwe.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b12c004e7dd---67357787985.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b86beadaae0---89070967442.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/m9ouqpbopv4jabn0b8a7afn9o5/katin.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=ghost+recon+weapon+locationsPDF 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_off00012436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12436 17592 bytes
SHA-256: 42b3616fdf271095201d90210d950aa52fa3f5229e6474f3a6675efceb206215
font_01_sfnt_off00015241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15241 10596 bytes
SHA-256: eca3c5aef5b2de4d950623f98765f99bfdb4ec6926c4b3c70993de1a8094256d
font_02_sfnt_off00016a85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A85 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1