Malicious PDF — malware analysis report

Static analysis result for SHA-256 677276c2a6aed1d9…

MALICIOUS

PDF

82.9 KB Created: 2021-09-05 15:22:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: dc6eaa741e69da0dcee1af6a000261d5 SHA-1: 05a377f078ba0575038535dac6157af2188e3a9e SHA-256: 677276c2a6aed1d9b0892cb81a80a682b338b51cc671f9de3b42c039a8e61839
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to compromised WordPress sites, suggesting it's used for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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 https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16100e2d8693af---96900154488.pdf In PDF document text
    • http://naturallabs.fr/userfiles/file/15094887146.pdfIn PDF document text
    • http://boothbayharborshipyard.com/userfiles/file/14673969177.pdfIn PDF document text
    • http://asustainable.com/global/file/gipulaj.pdfIn PDF document text
    • https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/l7vunrka9t734lkjnc2ofj76eq/72349844035.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f8634537f9---49667118216.pdfIn PDF document text
    • http://qqsbg.net/uploads/file/womelemetelikepinuxe.pdfIn PDF document text
    • http://keralastatetailorsassociation.com/userfiles/file/pekefotavabowarizaxale.pdfIn PDF document text
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070cd8041dcb---34957409442.pdfIn PDF document text
    • http://mecaniquekd.ca/upload/file/sedivimumesit.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/16108401f3c9ce---65719474030.pdfIn PDF document text
    • http://yachtandgulet.com/userfiles/file/95685344060.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/36ddbe866362f6a8d702470f7ce5b618/47291812375.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/51036571951.pdfIn PDF document text
    • http://vetranhtuong.info/luutru/files/ratilitoxomuralewa.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/0dea4944f71dbaeedcd531cc8c946ea6/sajebubipurur.pdfIn PDF document text
    • http://jerseybankruptcylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/mazepupezidibew.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098ba8990ee6---21601804685.pdfIn PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607845f490903---98322615110.pdfIn PDF document text
    • https://medtek.vn/storage/file/51807325726.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/1c64ee17e7e3290c40de7e451c4a1a2b/kekatopefojabofafekejosap.pdfIn PDF document text
    • http://malifer.hu/upload/file/2165054207.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/4b73ea2e0706115b68cf0df25d775b1a/tinidomuminadodumol.pdfIn PDF document text
    • http://china-hold.com/UploadFile/file/20210801134216415.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=bissell+cleanview+multi-cyclonic+bagless+canister+vacuum+manualPDF 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_off0000deba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBA 17172 bytes
SHA-256: d7cc5ad962cb9d119f6680f06ff32c0a827836795b353c682ef8eb650c7dc5cc
font_01_sfnt_off00010b12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B12 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12329 11164 bytes
SHA-256: 96e3c22d0a6783e19485776de353d6841c82bb579357506fb9e70d298516d1f0

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