Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5fd2fe384f6bd16…

MALICIOUS

PDF

88.5 KB Created: 2021-07-25 06:06:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: c52e7102945c8ef59106c04d3005f980 SHA-1: 6ea93f2947cb4ca559065b24e966a8dfc42d6cb8 SHA-256: d5fd2fe384f6bd1639cd93e43f47eafc808342af47f233a2123d80563c34fe47
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. The document functions as a link farm, containing numerous URLs that redirect to various external sites, some of which are hosted on compromised WordPress installations. The primary purpose appears to be directing users to potentially malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/8c4898c88bcc8392cde243797d9a1c61/wulesowuzasederurogulebu.pdf In PDF document text
    • http://imi.vc/upload/files/3135926828.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-4-30/20210430020439530331.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160707238c6ca0---jetedoxivolove.pdfIn PDF document text
    • http://heibldr.hu/FCKfeltoltott/file/14755053431.pdfIn PDF document text
    • http://futuralagoparking.eu/userfiles/files/fogetoberojenuroruga.pdfIn PDF document text
    • https://annjulieskarpmo.com/userfiles/file/20945539443.pdfIn PDF document text
    • https://subarini.ro/mm/file/11415005329.pdfIn PDF document text
    • http://kaies.cn/upfiles/21052306421454945588evxc.pdfIn PDF document text
    • http://zaintik.org/files/galeria/files/34461878266.pdfIn PDF document text
    • http://www.truca-taoules.com//ckfinder/userfiles/files/gevawurolivonowilo.pdfIn PDF document text
    • http://omonetach.pl/foto/ilustracje/file/11834660385.pdfIn PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/ho561ck8pirsk21ts5habdslq2/zewukaxidomubasil.pdfIn PDF document text
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/cedb08bb22a9dce82887e886e9fa991e/29585405896.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ae2895c3a95---66596844261.pdfIn PDF document text
    • https://parokisantolukas.org/Uploads/userfiles/files/59703744333.pdfIn PDF document text
    • http://atek-ent.com/upload/file/xuzagupoperejegavapolabek.pdfIn PDF document text
    • http://highlandhighclassof1962.com/clients/c/c3/c330a44b04b080977bf299ea430a317d/File/50744638729.pdfIn PDF document text
    • http://villaelen.it/userfiles/files/dilijenunajojewani.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/pixixavaloterev.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/ssbjc4nomjh8ahtfi0tbvn7k41/48865808403.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd465b5342e---xiketetejasipogiwavoxu.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cfac8abf15---wulazamuvaxotazomifami.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b6ad615139---gexivalegiratekuse.pdfIn PDF document text
    • https://allmassage.net/upload/file/20210527195451.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=bow+tie+template+for+fondantPDF 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_off0000f561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF561 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010d78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D78 10632 bytes
SHA-256: bd61b0e2436d90e3df763e6c4fc6103f07c6673ea91aff168b25ba87895f278d
font_02_sfnt_off000125cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125CC 17052 bytes
SHA-256: de3710e3eab372bc0ad54f93dad324b6b981bfe9b4bed9868e80f6eb989fd310

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