Malicious PDF — malware analysis report

Static analysis result for SHA-256 bee209dbc2eec22a…

MALICIOUS

PDF

84.6 KB Created: 2021-07-08 07:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 1bc73d9e78f10c2e7d0b5c6ba1076fbb SHA-1: 8cb3cc71484b7b91d54b82cee7c38320d7c0c49c SHA-256: bee209dbc2eec22ab60c39a60335126711b4598a436abf9d1f5c0bef00a9b8bf
156 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to malicious content or phishing pages. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://limitlessillusion.com/wp-content/plugins/super-forms/uploads/php/files/968ef105214e0a66e7aa8bef8d1ad7b9/bumosajetiwevapevamodap.pdf In PDF document text
    • http://cn-daomeng.com/upload/userfiles/files/bc3b6a8cdf395fa79b715482cfac8549.pdfIn PDF document text
    • http://zulassungsservice4you.de/bilder/file/gikepid.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/1608090ff40c02---50892366917.pdfIn PDF document text
    • https://harkakotony.hu/UserFiles/file/vuzubidinutixulave.pdfIn PDF document text
    • http://lungshingcentre.com/userfiles/85767961827.pdfIn PDF document text
    • http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608172399fee8---58179860856.pdfIn PDF document text
    • https://myphi.biz/nbloom/fckuploads/file/xaxuzunafimefalutafunup.pdfIn PDF document text
    • https://classicandcamper.co.uk/wp-content/plugins/super-forms/uploads/php/files/sp5jv1e6d3esq1pgnen2oh2vfd/kezepabetusi.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbdbcc30cf---zasovumivavutigina.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9841ff3f72---4308453160.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/64f35ed3db13df15584989d1354e73c5/jamaluzu.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160b5423aaf233---13140003404.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/58459495248.pdfIn PDF document text
    • http://mobilesamara.com/img/files/file/14409971308.pdfIn PDF document text
    • http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/8c97b44c834b2d37a0a7c007a9926e56/satudesovekosixidi.pdfIn PDF document text
    • https://bonacorsi.it/file/tavetexafep.pdfIn PDF document text
    • http://belhavenhighschoolalumni.com/clients/13962/File/zipujet.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/16085a11d0f041---nosinebiradopalumuferofo.pdfIn PDF document text
    • http://xn----8sbxab3abskk3a2j.xn--p1ai/media/file/91522842842.pdfIn PDF document text
    • https://thefertilizerequipment.com/d/files/pazez.pdfIn PDF document text
    • http://atol-res.pl/uploads/file/90110454693.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=aloha+in+networking+pdfPDF 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_off0000e5f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F6 18256 bytes
SHA-256: 3a1fa02b3ce6f7489f5d95d6ab16d57ef578926769dfbd474fc076b1fb46322a
font_01_sfnt_off000114c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114C9 10768 bytes
SHA-256: c24e7101f45a3bb82b27a644bafb5992440e8e29541fc8a3333b758a5f27e758
font_02_sfnt_off00012d5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D5B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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