Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e60946a61268964…

MALICIOUS

PDF

103.1 KB Created: 2021-08-16 11:22:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 45580a03edf483ea9de57114655cfdea SHA-1: c62eefb8e8ed96f4232036ad83f05672d3b66e7e SHA-256: 6e60946a61268964a93057f8896954efef9bf9abaa3f900579283e8e2cfb3a80
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to compromised WordPress sites, specifically targeting file upload functionalities within plugins like FormCraft and Super Forms. These links likely serve as a distribution point for malicious payloads, as indicated by the ClamAV detection of 'Pdf.Phishing.Trojan'. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the structure suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fcc46e228e---48250294427.pdf In PDF document text
    • https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/c0j85kq4e7pv84lqlt81k5av48/87838630680.pdfIn PDF document text
    • https://avflash.nl/upload/files/5324910872.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b680bd76b0c---salurexuzotuwotu.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/16074991422bd7---sageniti.pdfIn PDF document text
    • https://onderdurdu.com/upload/ckfinder/files/zimojixowijane.pdfIn PDF document text
    • http://ligonfamilyreunion.org/clients/9/9a/9a44987365eba454cd9b2deda39aa7c0/File/furuvupufasakemofiwazir.pdfIn PDF document text
    • http://akhsmombasa.com/clients/861898/File/22616964920.pdfIn PDF document text
    • http://comp-art.ru/userfiles/file/34012271199.pdfIn PDF document text
    • https://derey.nl/app/webroot/files/userfiles/files/33527844460.pdfIn PDF document text
    • https://goldenapp.net/file/65863406334.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fe76815083---26289689059.pdfIn PDF document text
    • http://nutronicltd.com/userfiles/file/xutusubaruku.pdfIn PDF document text
    • https://momentous-inst.com/uploads/image/files/56331907118.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/t84g3fjr7nevsc18c20tmue800/debosinol.pdfIn PDF document text
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9b38498dc9---rovaxexufawogifatu.pdfIn PDF document text
    • http://daphongthuyhueminh.com/uploads/image/files/devebumuruvisoxu.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/16083846714bc5---lomijivewudawila.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/73a2a2516b32ae4fb2023ac606ed2170/xutibomogumaguzazijaw.pdfIn PDF document text
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/bc6bbad8f3a29d63fa237b38aa0ef34f/34262847990.pdfIn PDF document text
    • https://clearpatth.com/userfiles/file/vilugibijunew.pdfIn PDF document text
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/1f5d19effd1a77afe6c12e55fdab4a9d/laxexa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=4th+and+goal+2018+unblocked+games+77PDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012e02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E02 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00014614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14614 17588 bytes
SHA-256: d436233976bf99569db37612c4297dffaac4ce59d03c97f218c4efce70edd0a7
font_02_sfnt_off000173a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x173A8 11488 bytes
SHA-256: e1e7750505d525eeb5d5a04344d5121a86688ccd11f095372e97eb0ff0d7e84a

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