Malicious PDF — malware analysis report

Static analysis result for SHA-256 f962b6b7aaab4c2c…

MALICIOUS

PDF

146.3 KB Created: 2021-07-08 10:18:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 315613a7b42447591387f1632286f3d1 SHA-1: a0f5c20163d55db8a28c2c8739d63b4037ef3991 SHA-256: f962b6b7aaab4c2c435f07f39c929ffcc155a0a5eda6be23ad59d2b2437519a2
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm hosted on potentially compromised or disposable domains, designed to redirect users to other malicious PDFs. The embedded URLs, despite some being marked benign, are part of a larger infrastructure likely used for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9838

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://girisimcilikproje.com/resimler/files/lixipirebipuxizukovepumoj.pdf In PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16070d2da375dc---56451079442.pdfIn PDF document text
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/3hvl8v4mqhu0odapmnmj86vb24/fuzosefapawatakuwutelumu.pdfIn PDF document text
    • http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f7556354e7---16354385951.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1606cfada138cb---48381155439.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be194cbcf3d---vonurobukinubere.pdfIn PDF document text
    • http://autoscuolavalerio.it/userfiles/files/49405928830.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a5a6460ab---72074253032.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/5d8380f4b7b477033c38cc8b1e7e1baf/18617190851.pdfIn PDF document text
    • http://ehoron21.mn/uploads/files/xekat.pdfIn PDF document text
    • http://omonetach.pl/foto/ilustracje/file/26994737629.pdfIn PDF document text
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/16e80b29a56ff7203f2495ea2b332b7c/xidavunowujufi.pdfIn PDF document text
    • http://elcampoeco.org/FCKeditor/file/54580648779.pdfIn PDF document text
    • https://www.sacict.or.th/ckfinder/userfiles/files/18968303429.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160746092256b7---70758041726.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160c8cc2fa1602---84443380717.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607632f939223---13669647331.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fdf6d3f147---45536950838.pdfIn PDF document text
    • https://bbu.vn/Images_upload/files/dagorutomigaribixubuk.pdfIn PDF document text
    • https://hondamienbac.vn/userfiles/file/53326276538.pdfIn PDF document text
    • http://epoxidice.ro/mm/file/44011622342.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609780e307e52---80972924961.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=how+old+did+noah+live+to+bePDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b3ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B3EC 10360 bytes
SHA-256: bb0d48c84d4d6a3260ca5c0cca0ac882d55cdb48b64b8dc4d39fa44d1eb0e58d
font_01_sfnt_off0001cb25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CB25 17520 bytes
SHA-256: f5739abd141dcf8e948d3173ea0f127b30d4338040175d798a2184a2e3d70d38
font_02_sfnt_off0001e620.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E620 23076 bytes
SHA-256: 487613a3d93c790ed3712ed9916a1897d3ea7e1368b068d404a613f998e44fa3
font_03_sfnt_off0002217b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2217B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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