Malicious PDF — malware analysis report

Static analysis result for SHA-256 d14d02ca0b977b08…

MALICIOUS

PDF

79.5 KB Created: 2021-03-23 18:51:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: bcc1c66a23b9ae68928f6f710b17f7bb SHA-1: bde5d208690fedccb96c77aec0d7aff9fbe7ab92 SHA-256: d14d02ca0b977b08b7aada7547184988f31572804049b3145a70a1092689218a
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure for a "Clash of Clans hack free download" and exhibits characteristics of a link farm, with numerous external URLs pointing to various PDF documents. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dafemum.ru/wix?keyword=clash+of+clans+hack+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424011/normal_602f9fdcd2fec.pdfIn PDF document text
    • https://cdn.sqhk.co/ritapabinap/lFV4OiP/half_quarter_worksheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469365/normal_6035f47632efc.pdfIn PDF document text
    • https://cdn.sqhk.co/mesojofu/hdicjho/trending_instagram_hashtags_in_nigeria_today_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/sevijeruba/bjd8jh2/carshield_warranty_claims.pdfIn PDF document text
    • https://cdn.sqhk.co/mesodimeduje/eXjagej/vusadotanefebeziwoduto.pdfIn PDF document text
    • https://cdn.sqhk.co/jomurozop/jaJiihc/sakatedarenum.pdfIn PDF document text
    • https://cdn.sqhk.co/fokapalo/g4jgqyI/arabiyyah_bayna_yadayk_book_1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427504/normal_5fe74e3a04657.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370275/normal_602e11aa8cc18.pdfIn PDF document text
    • https://cdn.sqhk.co/nalogigoke/iiXjcgj/wupuzojutulamewonalamogab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/96615912076.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/how_does_the_endocrine_system_communicate_with_other_systems.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/vogovasezus.pdfIn PDF document text
    • https://9cf93ecd-64ee-4ad6-afcc-f350577a7522.filesusr.com/ugd/c4dbd3_2a7308aed5df4f4eac5524c458110091.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/natisoginaturedotit.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/mcdougal_littell_geometry_resource_book_answers.pdfIn PDF document text
    • https://2c8134a4-d865-4da1-8961-c755d7242105.filesusr.com/ugd/6dcf04_8023052f58e64d62ac116046ad0287ef.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/accp_bcidp_study_guide.pdfIn PDF document text
    • https://4d75d3c9-3a4d-4df6-84ab-e48b83d723e5.filesusr.com/ugd/cdb50c_4e1115a1fc7843c095196a3322255c11.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/software_architecture_diagram_app.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE2 5168 bytes
SHA-256: 52dd16ff800e2e5311cc073ce46e447b5af6fd79f82212010dcbcbd7a26be287
font_01_sfnt_off00010083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10083 21508 bytes
SHA-256: 7cb7c05838eeb0282d8853150e15e036e9593af3236b345c47cf70d74ee712fb

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