Malicious PDF — malware analysis report

Static analysis result for SHA-256 cebc7f9931656e39…

MALICIOUS

PDF

80.3 KB Created: 2021-03-15 03:47:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: f4d60758c6030a7384dc2a1f2b0f50eb SHA-1: 3c4426e269b1f6e7b8571cc976a72dc997da90c2 SHA-256: cebc7f9931656e393654fe196da405227a0cd516361512ba58a02d3eef541e16
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML and ClamAV, indicating malicious intent. The document body, though heavily obfuscated, contains references to 'Codashop ff hack apk' and is associated with numerous URLs, many of which are hosted on disposable domains. The presence of embedded URLs and the overall structure suggest this PDF is designed to redirect users to malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://vilenefex.ru/123?utm_term=codashop+ff+hack+apk PDF link annotation
    • http://helplnstagram-confirm.com/24326366692iemhf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487658/normal_5ff68e07efb7e.pdfIn PDF document text
    • http://larts.digital/mepowedutisotenasqrvh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369908/normal_60449a82d913d.pdfIn PDF document text
    • http://axacheat4.xyz/96368255115ypj5r.pdfIn PDF document text
    • http://blacklaser.ru/python_projects_downloadqfku9.pdfIn PDF document text
    • http://naturka.space/sonic_the_hedgehog_ipod_classic_downloadxy9br.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374953/normal_6018be49a80e0.pdfIn PDF document text
    • http://cleaner-inn.club/spreadsheet_for_wedding_budget_plannerpglcz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e1d856a-8988-495e-8aa9-b6567c5f708e/cuantos_litros_hay_en_un_metro_cubico_de_diesel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ba6ca8a-b7ac-4e53-9984-b98db5de4f14/sat_math_practice_questions_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fe71d82-e96d-4b01-87e9-10f2faee5339/what_questions_to_ask_your_sales_team.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/posarokiralodaju.pdfIn PDF document text
    • https://s3.amazonaws.com/timituvupame/wisuwipovifosozelekixapo.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/97449631700.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/11_22_63.pdfIn PDF document text
    • https://f6e2a16f-d004-42cd-8f17-0463e090774c.filesusr.com/ugd/c70c35_40384517ead447c9a90e8a4abe3c953a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/graphic_design_job_posting_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6c1d1e9-be12-4d17-8328-b7b90d9950d0/zebufegutit.pdfIn PDF document text
    • https://c183b790-cb34-49aa-848e-1a9f2b14dda3.filesusr.com/ugd/d8966e_e638ce57900e40088b9b84978e45980f.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA6 5084 bytes
SHA-256: 991fca4fc2050764d21fe64f88aef9179b739c2f53eb4bda338aa894501107b3
font_01_sfnt_off00010cf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF5 11964 bytes
SHA-256: e86937a3ad1f7fcd317681ae2a4eee028c93da659bf7a9324bafb0516245ad0b

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