Malicious PDF — malware analysis report

Static analysis result for SHA-256 067c2c75c8d9f39c…

MALICIOUS

PDF

85.7 KB Created: 2021-08-14 00:00:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 3d2c9a2d6e80b3053bc1a2a4b219eb90 SHA-1: cbae1761fba416621dbf96dea99b99c9c41df82c SHA-256: 067c2c75c8d9f39cffce6dcb438c95a50c9a4f1514b1096bac129dbaa0719b57
156 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to compromised WordPress sites and disposable domains, suggesting it is designed to lure users to malicious content. The document's structure and URL patterns are consistent with a link farm used for phishing or distributing further malware.

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://nomylo.ru/uplcv?utm_term=elenco+do+filme+como+eu+era+antes+de+voc%C3%AA PDF link annotation
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/5829e479caa215e3b7c7520e8e1a2e8e/vuvisafalewujazo.pdfIn PDF document text
    • http://bkdesign.ee/userfiles/file/41760022790.pdfIn PDF document text
    • https://observatoire-omic.org/documents/file/80603948426.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf1f4edcf9---94989951634.pdfIn PDF document text
    • http://coral-travel66.ru/admin/ckfinder/userfiles/files/71777295413.pdfIn PDF document text
    • http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cfa9b2ac070---52863162405.pdfIn PDF document text
    • https://hbphoto.ca/resimler/files/zukeridimezog.pdfIn PDF document text
    • http://teranor.com/ckfinder/userfiles/files/67530129613.pdfIn PDF document text
    • http://www.europesolidaire.eu/userfiles/files/26744347797.pdfIn PDF document text
    • http://wooshin.kr/uploaded/file/173739438260adee2cd604b.pdfIn PDF document text
    • http://zhatuogz.com/uploadfile/file/70220619542.pdfIn PDF document text
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f98f50e340---4169122309.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/1d517b3a9ec9fdb3a573678d47bbfe69/32208125288.pdfIn PDF document text
    • http://princeverma.in/uploads/files/dimuxalunato.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/dvncpnm32j64lue76ug2p3uv34/77936084356.pdfIn PDF document text
    • https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/7fdb3eb84a885dcb531a791974090c9b/woxowosov.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c34ddef7c3---nodixipopimumigavodof.pdfIn PDF document text
    • http://wphs67.com/clients/9/95/95f8299e8098c1f2c85aab0f7ead5e97/File/69123859269.pdfIn PDF document text
    • http://agisma.ru/files/pages/files/xapuge.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/804aa237c5f2bdb62638b9ef03f5abe8/84828144743.pdfIn PDF document text
    • http://www.buildingmalawi.com/images/uploaded/documents/46045323913.pdfIn PDF document text
    • https://rdsdealers.com/ckfinder/userfiles/files/dujavitozadaduve.pdfIn PDF document text
    • http://bebelino.ru/userfiles/file/11771351273.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a96ce3dc898---99170935416.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e66f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE66F 19288 bytes
SHA-256: 659a6154cd9a0d196994aa8f1633a1f014e4e433f7c28a3dd0a5bcead1016730
font_01_sfnt_off00011515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11515 10944 bytes
SHA-256: 846313968267f6c550976eef0e4fef85904373409ecd30628ce7558bea35afa7
font_02_sfnt_off00012e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E2A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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