Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d00cf8fc7cc1b81…

MALICIOUS

PDF

65.0 KB Created: 2021-02-21 00:37:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 875e0602f09d81e4e85b62e00229beb8 SHA-1: 58296e8450762be7e931cd9ded37428c3a1ee5f5 SHA-256: 6d00cf8fc7cc1b81991c233a7896899d4a20d27f3d5064aca92d1045fe08e22a
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL that directs users to a suspicious domain, likely to host further malicious content or phishing pages. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into visiting a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/wb?keyword=cloud%209%20vapor%20and%20e%20cigs%20locations PDF link annotation
    • http://salet.store/coppelia_mazurka_piano_sheet_music1paqe.pdfIn PDF document text
    • http://liketime.fun/gta_cheat_apk_freei5t1m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447450/normal_5fd7dd7474780.pdfIn PDF document text
    • https://cdn.sqhk.co/donaxewon/hgdigz7/gujosowad.pdfIn PDF document text
    • http://svoylend.xyz/korean_bilingual_bookspm7zm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476930/normal_5fd2c4d592236.pdfIn PDF document text
    • http://zoomita.fun/graphing_lines_with_a_table_of_values_worksheetyhwrm.pdfIn PDF document text
    • https://cdn.sqhk.co/dewozoju/3Q1Jpjj/49673795586.pdfIn PDF document text
    • https://cdn.sqhk.co/gilitejeku/q6F0Eha/assistant_director_of_nursing_job_duties.pdfIn PDF document text
    • http://teaitalis.space/desh_bhakti_gana_dj_songo54zp.pdfIn PDF document text
    • http://item-mask.top/jokerobulunuviwadeduzigol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425227/normal_5ff58017338af.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/wunupalezozerud/15289861484.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/biochemistry_report_means.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/aap_beeti_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/40456347142.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_off0000c290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC290 5360 bytes
SHA-256: b86c47cc92b65152df38065fb2a3dd639a6ce060680d24ff60b932b5ef4ee2f3
font_01_sfnt_off0000d4df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4DF 10048 bytes
SHA-256: 29815c0bb157f23a3337e00e3a0e68a52e492a0db8d0ab6f952ffced84ba6590

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