Malicious PDF — malware analysis report

Static analysis result for SHA-256 eed68cf084ada6b5…

MALICIOUS

PDF

129.1 KB Created: 2021-03-15 03:50:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16e6909b831a0701cff369717c040c0c SHA-1: 7b2ff53086c1559c9607e275ed957391c8206b64 SHA-256: eed68cf084ada6b50df0d9ae16eb77b224a17c893c2f63980e71684f41355601
104 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to an internship report, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://soxebez.ru/123?utm_term=internship+report+on+ptcl+finance+pdf
    • http://bopolubolef.mywebcommunity.org/begizivowenojis.pdf
    • http://fulokixowo.scienceontheweb.net/vesakixaletagusafupikif.pdf
    • http://zatutajijiti.getenjoyment.net/pengertian_kebutuhan_dasar_manusia.pdf
    • https://static.s123-cdn-static.com/uploads/4418567/normal_5fdef413e6dba.pdf
    • https://static.s123-cdn-static.com/uploads/4419206/normal_5fcfe9afabd03.pdf
    • https://cdn-cms.f-static.net/uploads/4470205/normal_6029003b8f3cb.pdf
    • https://cdn-cms.f-static.net/uploads/4380705/normal_60179ce21b1a7.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vamavaremimot.atwebpages.com/how_to_reset_a_neato_botvac.pdf
    • http://memamawu.onlinewebshop.net/penukudaruvupuvibijesedi.pdf
    • https://s3.amazonaws.com/mufukep/free_printer_brother_dcp-_t310.pdf
    • http://pigutun.myartsonline.com/xusodipesokawesav.pdf
    • http://rupesujutiwu.myartsonline.com/68017934194.pdf
    • https://s3.amazonaws.com/migivewuwe/38674561884.pdf
    • https://s3.amazonaws.com/ruzumeb/61389439304.pdf
    • http://doriponesarom.myartsonline.com/how_to_unlock_a_tracfone_samsung_j3_luna_pro.pdf
    • https://s3.amazonaws.com/zidosozawok/23930615426.pdf
    • https://s3.amazonaws.com/fopalew/census_report_of_india_1941.pdf
    • http://bigapenegig.atwebpages.com/vizobimigidoxaretovakusi.pdf
    • https://s3.amazonaws.com/tokafanawa/chaitrada_premanjali_movie_video_songs.pdf
    • http://fidalanono.myartsonline.com/how_to_get_anyone_to_fall_in_love_with_you_questions.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b227.bin
35f9ea0d075feaa0a95fd640247490c5f264b64b5e126116f4ebb2134bd5b08c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B227 2452 bytes
font_01_sfnt_off0001bce0.bin
5b351861f155824d7f478014dd1260e6580725aae5aa3d50aa891fc56cf194b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BCE0 5180 bytes
font_02_sfnt_off0001ce7a.bin
0d05ee580745084f6d07ebc2d256484fee46fb82c03a8abf6f3562aa902c48cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CE7A 11612 bytes

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