Malicious PDF — malware analysis report

Static analysis result for SHA-256 006af28bf5c406f3…

MALICIOUS

PDF

80.8 KB Created: 2021-07-06 19:56:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: d6d2fb60119f19fac3e00b9430f8449d SHA-1: 3e36a8bd5516a5a6c16bf2afa009a8bde3f2bd2e SHA-256: 006af28bf5c406f356b8f1a264d08bcfa719b11b3022084b50578ebf3a7ac247
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a link farm pointing to numerous domains, many of which appear to be disposable or compromised, suggesting a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious websites for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://garglob.ru/uplcv?utm_term=pdf+to+vector+software PDF link annotation
    • http://bomtvplus.com/data/board/file/20210513193214.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/60773271590.pdfIn PDF document text
    • http://telmeed.com/web/ckfinder/userfiles/files/88871643202.pdfIn PDF document text
    • http://riggi.ru/userfiles/file/1719636949.pdfIn PDF document text
    • http://vksraja.in/fckeditor/upload/file/61500196751.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bbef7f41ff---50756027361.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2c2761d995---kexitadakofumubos.pdfIn PDF document text
    • http://airconbank.com/upload/fckeditor/file/fuduposofidevesajazunig.pdfIn PDF document text
    • http://www.esthemed.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160c2146dbd3d3---pelotedafebuvojami.pdfIn PDF document text
    • https://drsaman.com/files/46300833924.pdfIn PDF document text
    • http://diysmart.net/userfiles/file/fugoweboxuxukamunodelalof.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/fj2c4n03unufvd87mbnqlfq2bg/dimojufarimozedagi.pdfIn PDF document text
    • http://www.aluvascientific.com/UserFiles/file/vasedes.pdfIn PDF document text
    • http://lawngo.net/fckfiles/xikusibamiritufupoteru.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/85951072808.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/28870e00f3645399e52ba3296f7e0fbe/20270222417.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606cba2a64191---98454700804.pdfIn PDF document text
    • http://bamt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1608c71b5f2170---58955747579.pdfIn PDF document text
    • http://quaint-house.com/54253502653.pdfIn PDF document text
    • https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/ljpffq47c5e47j0aj7b5ovll2q/betomugi.pdfIn PDF document text
    • https://stillwaiting.org/userfiles/file/54470379993.pdfIn PDF document text
    • http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/f1eg3tbki4l4hl7qmjrek69c25/daxujizifelusefigizekanez.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160766d595dd58---nomefoxup.pdfIn PDF document text
    • http://allasclub.com/campannas/file/66882604450.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_off0000d938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD938 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f14a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF14A 17096 bytes
SHA-256: 64842386f4ada4de26390e00729a907f88bc9c39d47577ed8f4566c77b282bbf
font_02_sfnt_off00011e0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E0A 10380 bytes
SHA-256: ee461a06f7192c0a4c5e79ead4e369cea294e5aa04f215f89f29ac08144ab687

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