Malicious PDF — malware analysis report

Static analysis result for SHA-256 059d9f8535a63514…

MALICIOUS

PDF

158.7 KB Created: 2021-07-14 05:44:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 42b64c511e4de9289652f42ddee84b10 SHA-1: c1865f1eb5a561becb2eaa88e5164212ce0d9470 SHA-256: 059d9f8535a63514c94b1aa7c32303a3bd05bcb2687d05dccc9cade738db3ae9
156 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to compromised CMS uploads and disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. The presence of multiple unknown URLs and the nature of the heuristics point towards an attempt to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9750

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://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608669bec6871---41617502417.pdf In PDF document text
    • http://highendteen.com/userfiles/files/kaputufewixupotukin.pdfIn PDF document text
    • https://cakenflowersonline.com/userfiles/file/dobowikivupizax.pdfIn PDF document text
    • https://la-klamm.org/userfiles/file/37500775015.pdfIn PDF document text
    • https://thehero88vip.com/ckfinder/images_store/files/betodov.pdfIn PDF document text
    • http://geo-equipe.it/userfiles/files/25296710254.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080ca652e9b5---26868186554.pdfIn PDF document text
    • http://asbufestival.com/uploads/FCK_files/file/rikovifekilefuzuvozam.pdfIn PDF document text
    • http://pvvc.cz/files/rixew.pdfIn PDF document text
    • https://manuscripthandler.com/userfiles/file/bobinovoferenepo.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/6ms27090bk3g4unn1kbt1j2571/90698929415.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608708739f671---woxas.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160e2c9bdd1f49---47582273881.pdfIn PDF document text
    • https://thefertilizergranulator.com/d/files/55036932461.pdfIn PDF document text
    • https://cutandcolorparrucchieri.it/file/dapigafogakukumageg.pdfIn PDF document text
    • https://sgotomotiv.org/upload/files/kemukowanazadukewe.pdfIn PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/r8dici24e5q8uacdinlqp26ci4/99271584287.pdfIn PDF document text
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/5fee39cfb9951f29b15ef6caedcc2b5e/60407755305.pdfIn PDF document text
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/mq396ucp3530snqi6b0gh3nnfs/9240555903.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160cab7b8b40f0---gibaz.pdfIn PDF document text
    • https://implant-drill.com/userfiles/file/78288809551.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073d87e91fb3---wovefexitobufasiw.pdfIn PDF document text
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/b587121dce9da61eb5dd65c490fbd412/4660861564.pdfIn PDF document text
    • https://uleshuzataruhaz.hu/files/file/velitikefomufopepesami.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=types+of+ships+in+merchant+navyPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001fc7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FC7F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00021496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21496 10844 bytes
SHA-256: 3ac6d1486cf2901d3d711ee27f7c9dcf16390d1769ec67540deed6315e7d60e7
font_02_sfnt_off00022d7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22D7E 2936 bytes
SHA-256: 71ced80a09a924a285929bc828b0c70e0382b106deda1d87d96d30bd19b57667
font_03_sfnt_off0002390b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2390B 20016 bytes
SHA-256: c12194a7e05d383103a49826a655dcdb6d07885a8210a3344559cf07cefa9a6b

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