Malicious PDF — malware analysis report

Static analysis result for SHA-256 14416ad1aecd134f…

MALICIOUS

PDF

86.4 KB Created: 2021-09-23 14:14:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 8c2cffc71e6a6a18a9fab80143a0dc79 SHA-1: 2e226fcd64b34b026a7f44cdba5a8b6809f63c43 SHA-256: 14416ad1aecd134fa1412f400530702ee93645849aeeb0f6486e8d0ade6dac5e
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external links, many of which point to compromised WordPress upload directories or disposable hosting, indicating a link farm or SEO manipulation tactic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to phishing or malware distribution sites. The embedded JavaScript is a common method for initiating further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9848

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://pfhotel.gr/ckfinder/userfiles/files/padarerilatikizin.pdf In PDF document text
    • http://www.fonfe.com/uploads/files/80242704985.pdfIn PDF document text
    • https://dpt-mh.com/uploads/news/files/97802325544.pdfIn PDF document text
    • http://lammensfilip.be/uploads/files/71258774111.pdfIn PDF document text
    • http://ownlines.com/upfiles/file/tinodumixipopagusesareton.pdfIn PDF document text
    • https://leresto-niort.fr/images/userfiles/files/60025272862.pdfIn PDF document text
    • http://0985028898.kad.tw/kads/ckfinder/userfiles/files/77580174843.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1612f1979c9052---zovutop.pdfIn PDF document text
    • http://noahmission.org/dataroom/file/78233021785.pdfIn PDF document text
    • https://dhesient.com/media/68476079154.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613519f2db50e---76614803394.pdfIn PDF document text
    • http://fotografiafrancescosomma.com/userfiles/files/xisuzomedipafug.pdfIn PDF document text
    • http://conganbacgiang.vn/app/webroot/uploads/files/15991950453.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161405b20e1ec6---janivavobu.pdfIn PDF document text
    • https://bursakaynak.com/userfiles/file/85417301928.pdfIn PDF document text
    • http://arserwood.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210920144443244464cg31l1.pdfIn PDF document text
    • http://oilspecchem.com/files/60992590467.pdfIn PDF document text
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/f74d5536e3d69c7cca1f679a5ea7227b/92614681893.pdfIn PDF document text
    • https://tranthachcaodanang.thicongmaiche.com/uploads/image/files/gavikidusujud.pdfIn PDF document text
    • http://bhk-aindling.com/userfiles/files/20694469584.pdfIn PDF document text
    • http://andrelandberg.com/userfiles/file/44578678968.pdfIn PDF document text
    • http://www.evisiontiendaonline.com/ckfinder/userfiles/files/gimikejomefinozasutum.pdfIn PDF document text
    • http://kibbkw.com/uploads/files/12943696706.pdfIn PDF document text
    • http://vinczeandlaszlo.com/upload/63925837754.pdfIn PDF document text
    • https://adamslakeband.org/userfiles/file/41712285228.pdfIn PDF document text
    • https://kaptenhoki.com/contents/files/lipapon.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=excavator+simulator+games+for+androidPDF 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_off0000ee08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE08 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001061f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1061F 11072 bytes
SHA-256: 441912733ae77e0a567ccc532726d3732c4460b7a053be2bd8664a01da7e2b3d
font_02_sfnt_off00011fc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FC2 16992 bytes
SHA-256: 494705d6856817906969d9266970c2f675cbfa2c264c391aa1f5b1e096214446

Open this report in the interactive analyzer, or submit your own file for analysis.