Malicious PDF — malware analysis report

Static analysis result for SHA-256 f14d0189b1c7d776…

MALICIOUS

PDF

75.5 KB Created: 2021-09-04 17:57:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 120051de012d939d4b2394182e45041c SHA-1: ce9261e926050bf0d5a2a565393f289e0cc783f7 SHA-256: f14d0189b1c7d77694fdb36b5b03732808c1f672fd8ac040e806f6b8a79fccd5
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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://seychelles-resort.com/images/blog/file/wazerafukososipoju.pdf In PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/160f0697143a87---77938764224.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/161123c3fbad4b---xenep.pdfIn PDF document text
    • https://vicotelecom.vn/static/source/images/file/nividibozew.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160ac3c9e514ee---vipifijegalop.pdfIn PDF document text
    • http://ampletrekking.com/userfiles/file/41652346795.pdfIn PDF document text
    • http://faurerom.com/userfiles/file/67989051175.pdfIn PDF document text
    • https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c795805905---tokususerorujerizazowi.pdfIn PDF document text
    • http://instant-image.net/UserFiles/Site/File/zikila.pdfIn PDF document text
    • http://eqletstalk.com/uploads/files/202108281416569653.pdfIn PDF document text
    • https://shriramsteels.in/public/ckfinder/userfiles/files/91923905483.pdfIn PDF document text
    • http://cissi.it/userfiles/files/34374626491.pdfIn PDF document text
    • http://cdseoulps.com/uploadfile/fckeditor/file/61854879504.pdfIn PDF document text
    • http://avandcie-energy.com/ckfinder/userfiles/files/15425250843.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1612b5d401c498---82557024816.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/ripefafezuzo.pdfIn PDF document text
    • https://agape4u.org/userfiles/file/xexire.pdfIn PDF document text
    • http://casaledellasignora.it/userfiles/files/sisefijovisoxotoraxatedi.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf8f3039f7c.pdfIn PDF document text
    • http://www.propper-droppers.nl/files/file/60363648492.pdfIn PDF document text
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/c5f22c4b21a2aecc86a1bda1c9332170/kumepazerugagare.pdfIn PDF document text
    • https://novzelandiya.ru/ckfinder/userfiles/files/85700457124.pdfIn PDF document text
    • http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c4cdfbe1ab---melifemazuxalipow.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b19c050480e---42485624448.pdfIn PDF document text
    • http://chalappuram.com/userfiles/file/ramaf.pdfIn PDF document text
    • https://xn--pssa17sw71b.tw/upimages/files/97497627738.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=quran+pdf+king+fahdPDF 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_off0000c011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC011 10464 bytes
SHA-256: d864224816dcad3d5178184821f7790ad69af83e0512431680b3d1a47aedaa92
font_01_sfnt_off0000d785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD785 18644 bytes
SHA-256: c9cdd7f59411bce303f965bf1ce2fe66159ab771fce5bbec5732827cfe4b759e
font_02_sfnt_off000108da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108DA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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