Malicious PDF — malware analysis report

Static analysis result for SHA-256 3292ffa76f00a8f6…

MALICIOUS

PDF

90.5 KB Created: 2021-06-11 04:30:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: ad7e02418f9e6ca747ce5e4dcdd99a17 SHA-1: 7d887d2323646aff0d08326d049bdc102a6733c6 SHA-256: 3292ffa76f00a8f6930e2f5c0cc46d2770c14443bcd786136cb1401ae0af09ac
156 Risk Score

Malware Insights

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

The PDF file contains numerous links to compromised websites, many of which are hosted on disposable domains and utilize UTM parameters, suggesting a link farm for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery. Although no scripts were explicitly extracted, the PDF structure and embedded links point towards a malicious lure, possibly disguised as a game mod download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://philabc.ru/uplcv?utm_term=among+us+mod+menu+by+axey PDF link annotation
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607812fd01796---94946785088.pdfIn PDF document text
    • https://foxtailmag.net/wp-content/plugins/super-forms/uploads/php/files/ce6af8502ecb3b32b352f25ab1f4b428/82404699008.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1608b5decef64b---luzipixokuzofalatilus.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607d53f9dc96e---povazo.pdfIn PDF document text
    • https://parklanehotel.asia/userfiles/file/10070678725.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdac4ff0735---39659384757.pdfIn PDF document text
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/745dc017ee8aa20f3278a9e851b55228/45026472507.pdfIn PDF document text
    • https://veterinarycarefoundation.org/userfiles/file/xofuzafumededepubilofa.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160705637ec541---guxalumovitaxezupilovezuk.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b97c40cf591---kitomodizetagotebemakusul.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b39de0a8e6b---45771324813.pdfIn PDF document text
    • https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/edff6332172928f1211556cf7a2cf9c0/lepurukuzapobigolujavedo.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/7stc4lnv68kq7n8sfsdt7sk992/vukof.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608ec13a74abd---zezaf.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606f039d172be---75050471175.pdfIn PDF document text
    • https://neplatnasmlouva.cz/soubory/bojef.pdfIn PDF document text
    • http://musorcentrum.hu/files/article/file/89524492570.pdfIn PDF document text
    • https://actor-conseil.com/files/file/jagenove.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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_off0000e35d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE35D 6744 bytes
SHA-256: ffeb89eaad713c9717385028f79c9757067aafb2c2382ea8cbab0e6efe35a425
font_01_sfnt_off0000f445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF445 5316 bytes
SHA-256: 9864ac61f76eb5fc31918db4b2a6510add32015d8ee2ef4f62c3d3fd0a48d4b1
font_02_sfnt_off00010650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10650 5452 bytes
SHA-256: 7a32af2a794585982ea04545fd9e538c5e1f800a0886ea35ad645e2300cfa859
font_03_sfnt_off000119e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E2 12292 bytes
SHA-256: 3496dda8690ff4e2e36d7dc6eeecd205f5c407c091d3cb11615eb8aff637cffd
font_04_sfnt_off000141ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141AD 17620 bytes
SHA-256: c2ceb9d5d496f93b4cac939cbfbaa98d5dd56f8ce18ea99d695c5495dbf93bff

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