Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb8292be933798f3…

MALICIOUS

PDF

81.9 KB Created: 2021-06-27 20:02:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: ea5feefe8c441c91a26a5d47baba44c9 SHA-1: d1e4e1d9f969d8ccab311f2b6abe0892fc29cd8c SHA-256: bb8292be933798f33497ba075c90666b341807bf3f35a163d4a0e1580841a9ca
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document functions as a link farm, directing users to numerous external URLs, some hosted on compromised WordPress sites and disposable domains. The presence of the 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document may be instructing users to open a password-protected archive, a common tactic to bypass security scans.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://coretry.ru/uplcv?utm_term=dragon+quest+builders+2+hotto+stuff+pack PDF link annotation
    • http://dalaichau.com/files/13863300373.pdfIn PDF document text
    • http://mamnonlittlesun.com/upload/files/siworavuduvupobuwevudun.pdfIn PDF document text
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/jdjnebpblog0itekofv2m277u3/rawalaro.pdfIn PDF document text
    • http://lexen.ca/userfiles/files/36456642009.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608de5ed4d044---7663332527.pdfIn PDF document text
    • https://bawwabatrizq.com/userfiles/file/litotuzutejo.pdfIn PDF document text
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/dee4ef969417002500d965b4fd8293fb/xazesemitekunijos.pdfIn PDF document text
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/219b2ca282821e6b1e8c05f38fcb1606/vuburuvijarofemomugujafaf.pdfIn PDF document text
    • http://richiefamilyreunion.com/clients/7/7d/7d03816b951c94fc7c065ced7c7ccdcd/File/kawamuxudasi.pdfIn PDF document text
    • http://nuestratierrapremios.com/campannas/file/78829221717.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16074b586d022d---99203110502.pdfIn PDF document text
    • https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/ea08e72def4522bd45633281f5a79446/bamatiporopozasamilesa.pdfIn PDF document text
    • https://anfauglir.com/images/file/munur.pdfIn PDF document text
    • https://rowadalbyt.com/userfiles/files/sepelenij.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fc3b6136d0---jivijox.pdfIn PDF document text
    • https://tectrongim.com/uploads/files/pavakotuvimakewisufolopig.pdfIn PDF document text
    • https://partnyor.az/userfiles/file/laromigevakuf.pdfIn PDF document text
    • http://kondicionery-vidnoe.ru/upload_picture/file/84387174789.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/9cc03530370268a68a73bbe36f2b4af5/mofaxenawunotuxazibi.pdfIn PDF document text
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/046685f9920b303be5012e8a5bd06e28/94271835049.pdfIn PDF document text
    • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/810b0f128b41d1e73d307a13ab79bc70/telavode.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608848d0d6e4d---91014430218.pdfIn PDF document text
    • 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_off0000d366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD366 20140 bytes
SHA-256: 326e7e14e73fa06ff77577af9c63b2660f3b0e30291ba2cdeedbcfdd81d4f866
font_01_sfnt_off00010614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10614 11496 bytes
SHA-256: 23d5a96d8287d9cf13b82e21e18080691d1966fe3f205642121db33de525d86c
font_02_sfnt_off00012091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12091 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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