Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebce2258e5eaa4ef…

MALICIOUS

PDF

74.8 KB Created: 2021-06-10 06:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 433233e11ee2fb982868c1d80cff108a SHA-1: 3e32d8aa6888ad28343576c6e231705f7d12ba4d SHA-256: ebce2258e5eaa4ef681f7229fb02042391f2890e22ed30ba9ff839b9830e727e
164 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a primary URL pointing to a site offering a 'call of duty hack apk unlimited money'. Heuristics indicate a link farm and a potential download button lure, suggesting a phishing or social engineering attack. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a trojan or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://infrive.ru/pbw?utm_term=call+of+duty+hack+apk+unlimited+money PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4485153/normal_5fdfaff98e4af.pdfIn PDF document text
    • https://kavivafome.weebly.com/uploads/1/3/2/7/132740637/04b833d94ccb1.pdfIn PDF document text
    • https://wesafave.weebly.com/uploads/1/3/4/3/134307961/ba7894706e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388613/normal_5ff14033e4488.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384308/normal_5fd7d5dd7f754.pdfIn PDF document text
    • https://revowerixes.weebly.com/uploads/1/3/1/6/131607662/pedemefu.pdfIn PDF document text
    • https://josuwolirekovu.weebly.com/uploads/1/3/4/3/134305593/f2d0d950367.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452853/normal_60bd899ba43fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371791/normal_5fcbe9be7d33e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393644/normal_5fc99b00a9ee6.pdfIn PDF document text
    • https://mavuniwotikabu.weebly.com/uploads/1/3/4/3/134324734/wirulovukegixepuni.pdfIn PDF document text
    • https://xojemejavema.weebly.com/uploads/1/3/3/9/133987363/lowosaratef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375528/normal_5ff98b1652639.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416493/normal_5fdbb3c906486.pdfIn PDF document text
    • https://zafaketikeduve.weebly.com/uploads/1/3/4/7/134704309/mifivod.pdfIn PDF document text
    • https://gopufijubasid.weebly.com/uploads/1/3/1/8/131856987/9c9a7a8633.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kedetuwi.pbworks.com/f/my_talking_tom_2_mod_apk_ios_download.pdfIn PDF document text
    • http://pozapagula.pbworks.com/f/97828625081.pdfIn PDF document text
    • http://werinenimuta.pbworks.com/w/file/fetch/144518262/comment_enlever_le_flou_de_la_page_d_accueil_windows_10.pdfIn PDF document text
    • http://mutatalibo.pbworks.com/f/what_are_the_four_effects_of_baptism.pdfIn PDF document text
    • http://magesob.pbworks.com/w/file/fetch/144866304/19011703278.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE612 5192 bytes
SHA-256: 5b47e79d0c26f411a51d01c7a9f5fa4ec603aa66b3c5919c7071ae62ec3aa124
font_01_sfnt_off0000f7a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A5 11224 bytes
SHA-256: 3b1e71755d584cf62a4c8c6b2194f74021df7e07c897664fc021181b8bc2f347

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