Malicious PDF — malware analysis report

Static analysis result for SHA-256 0702ac47d69d148c…

MALICIOUS

PDF

102.5 KB Created: 2021-06-21 03:42:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 82850c31e50580dcb04b0e14bb371528 SHA-1: 5f43cdc2b797fa54f553281944ebd6bd7b0bc171 SHA-256: 0702ac47d69d148c995909105b1cbd44c2cd3efb8bcb05276368f446cedcd185
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 0.9990

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://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/c91d68uo4ilaf9ad615qhvqcr4/98903700697.pdf In PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/ee9e0f8e5ba8b287087928b98a17e801/lesudopewuvukilebawa.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/xufulozuvufazelun.pdfIn PDF document text
    • http://asckhn.com/acskhn/userfiles/file/gidezexuwexi.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/f3f54fe4a8a5cae7c930a7c5ffc43429/ropamika.pdfIn PDF document text
    • https://cbdc.co/uploads/ckfinder/userfiles/files/podujelekunesixezinituku.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/54559bc7836f95afb802e13b23c4e1dd/visewarigalefafuju.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1609e19b8a0cb0---51760935561.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a01e9fad4e1---24080665172.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/2a9d9f71d377b8d45ca1732c44bc86cf/romiriketenatefu.pdfIn PDF document text
    • http://alexanderkanevskyartistbiography.com/clientMedia/file/latilaka.pdfIn PDF document text
    • http://sdds.be/userfiles/file/pafokolokozoxupox.pdfIn PDF document text
    • https://alsterparkett.de/wp-content/plugins/super-forms/uploads/php/files/hn9vsppu6qcseljhfhms4es0a5/55930560749.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9679aa2908---misosolilotux.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b57af9f1738---garusevodonududotonera.pdfIn PDF document text
    • https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16096582f477d4---nidilaguvule.pdfIn PDF document text
    • http://blissrenewbeauty.com/newerac2c/userfiles/file/vidofe.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a81c14db15a---26694966619.pdfIn PDF document text
    • http://karunb.com/UpLoads/files/povuk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=afk+arena+peaks+of+time+the+divine+realm+guidePDF 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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000108ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108CE 9248 bytes
SHA-256: b7f92e8fd606267f361be8061e1e4bf0d169f196e7226810b062fc75053f2efa
font_01_sfnt_off0001260d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1260D 5448 bytes
SHA-256: 4644da90757c983b7f72260998ceaf1f1cb74835b6c9044f99b1e085eab6ff98
font_02_sfnt_off00013873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13873 14184 bytes
SHA-256: d2941a1a9022d4c23421ad83fc77bf27c43f1b18475545fe03c0b6bc5f55287b
font_03_sfnt_off0001664a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1664A 16196 bytes
SHA-256: 536551dee6876366cf8a5d925709f0aaa9c9f58e9963f4e154d0e8cf77de6ee3
font_04_sfnt_off00017b66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17B66 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176