Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d6cff481efeec8…

MALICIOUS

PDF

84.6 KB Created: 2021-06-14 11:28:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 381a3c6ce2ffd11a3636b5aced73592b SHA-1: aa9717e1163a4d3bd95a11e7e88fd90e6dd5878d SHA-256: 69d6cff481efeec89a724b2563ba5fef9f7f695c34bd4b87e45e2d52150664e1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://pixomot.ru/uplcv?utm_term=the+driver+thai+movie+eng+sub PDF link annotation
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f44f8e9d93---520381545.pdfIn PDF document text
    • http://langfordfinancialservices.com/userfiles/files/lujitivikepazezora.pdfIn PDF document text
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bfa0df61e7e---sezosovabevuje.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1608a16088aeee---godenulusogodepepofale.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607306cdb8e7f---90992517823.pdfIn PDF document text
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160944b1393ca7---29078958607.pdfIn PDF document text
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/2cda90a2bacd3cd975873376217e1c2d/28311861640.pdfIn PDF document text
    • http://ivepe-elearning.gr/assets/UserFiles/mainHome/file/jodawojadan.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd30281e01---joxup.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aba4c804c0b---70316606204.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/160c46ea4ebf68---pasalekesakupolez.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/beef8feb9b8b378b72598215f59ba5fd/bupudadimakaz.pdfIn PDF document text
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/543e4aa986f1e68220f863628f5d7880/38159786859.pdfIn PDF document text
    • http://mebco.ru/images/file/xidipoturotug.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/a0885b70d2b7325ae4cdaf7fad618750/76532417383.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/6864549414.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In 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://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C1 3260 bytes
SHA-256: b0820024b7847d110461f277ec6060050cb0d396de6d686cccf17fe07695e133
font_01_sfnt_off0000e47b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47B 5240 bytes
SHA-256: 6ad8f02c400996f7ce363d477f62121380613c35789e5ea34d82c52a554ce552
font_02_sfnt_off0000f618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF618 6808 bytes
SHA-256: 679c76cef9b160d42fd184853501d01f782a5a4a7e96e53c7532505b101b49ad
font_03_sfnt_off00010844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10844 19408 bytes
SHA-256: 9b5e827d7f0b43420b6a11b1ae488d2405a26fc2eb77d729606aa31d562dfdf7
font_04_sfnt_off00013681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13681 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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