Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8c7c27d50f7b3ef…

MALICIOUS

PDF

90.9 KB Created: 2021-04-21 03:02:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e9376766442ce0e7a6a52c1eef640773 SHA-1: a08e56730faa6f4584433dbe7b066ddce7a5f04d SHA-256: c8c7c27d50f7b3eff2883976f4179612a00ea8242c7286b667ab9f193de7032a
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one pointing to 'maypoin.ru' and a query parameter suggesting a lure related to 'graco baby swing spare parts'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or a scam. No scripts were extracted, but the presence of numerous links and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic suggest the document is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/strik?utm_term=graco+baby+swing+spare+parts PDF link annotation
    • http://doriwev.iblogger.org/wizards_of_the_coast_store.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483836/normal_60034937b8447.pdfIn PDF document text
    • http://fofiwafajelerax.sportsontheweb.net/color_atlas_forensic_pathology.pdfIn PDF document text
    • https://cdn.sqhk.co/viwitukaz/hbbgigf/corel_draw_x5_crack_serial_keygen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465006/normal_6054afb98d70f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393514/normal_5ff191026ded4.pdfIn PDF document text
    • https://cdn.sqhk.co/zijigemeworu/igxfiaY/71019695299.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374189/normal_6009072525bcb.pdfIn PDF document text
    • http://konolux.medianewsonline.com/46992163890.pdfIn PDF document text
    • http://mevixonur.mywebcommunity.org/86605421496.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jatuxijor.epizy.com/budinerowilumoxumebeden.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/jugs_pitching_machine_parts_ebay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fb619ea-43a0-4d95-b15a-9b569d69b5f8/mopuxofev.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/xuleg.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/11504905797.pdfIn PDF document text
    • http://gekekuvowu.epizy.com/elementary_book_report_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba165cd8-9b4b-49af-8bc8-cafb63d608c0/download_photoshop_gimp_gratis_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec1547a3-84b1-4dfe-993a-b976abdfd9fb/65290855333.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/android_version_5._1._1_free.pdfIn PDF document text
    • http://zovibeviniga.myartsonline.com/fundamentals_of_computer_architecture_and_design.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/328f9766-4ef2-4d14-a975-e1200b1c597b/point_of_view_writing_prompts_high_school.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104D0 7052 bytes
SHA-256: 1ee9f8c01947b64286e76e671ff0e62c7ce64f74507a293dfe16ab8e249b3a4e
font_01_sfnt_off00011cb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CB9 5432 bytes
SHA-256: ebae471317855c56335d935b2cc5040333c37e1374d6ace3e7381832820ad1c9
font_02_sfnt_off00012f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F5E 15028 bytes
SHA-256: cfbc8d7f2f46d560efe46ff7078d2791a45ae0e9bf1e5a9cfc27d819f26646b4

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