Malicious PDF — malware analysis report

Static analysis result for SHA-256 50d7496f0971ef3e…

MALICIOUS

PDF

80.6 KB Created: 2021-02-26 10:04:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 905ad1cc7539d95c944704bd6a9e357c SHA-1: 84d7cbe18ca713ea3205f77c836b0d80339be300 SHA-256: 50d7496f0971ef3e975e69333120266110f24e752b39338803ec85c347fdb6b7
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/strik?utm_term=samsung+galaxy+s9+lifeproof+fre+case PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410717/normal_6026dcbb733bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489730/normal_6003c71dd7273.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463006/normal_601d5edfbc7da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450513/normal_60253fb9a16d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477408/normal_5fc5d5004ccde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481418/normal_601a22fa76f4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392869/normal_6030955dd4ff5.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/mejifavo/increase_decrease_percentage_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/auburn_reporter_newspaper_washington.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/1918282454.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/school_uniforms_articles_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/apowersoft_free_screen_recorder.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/pinixaguxeruw.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/dynamic_earth_interactive_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/how_to_program_my_comcast_xr2_remote.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/vaxariritupitalazas.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/agathiyar_movie_song.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/girl_scout_law_coloring_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/filsafat_utilitarianisme.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/distance_between_two_points_worksheet_8th_grade.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 3

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_off0000fbc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC1 5764 bytes
SHA-256: 14e72d83832d44faadf8f47f2f464b945cb0f16a2c42201b502dad2296d1a957
font_01_sfnt_off00010f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F5E 11144 bytes
SHA-256: 907960afe3cd7e13f58c04dd15967efc2a9be81d6b5f2a788b36a63d2b28fc32

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