Malicious PDF — malware analysis report

Static analysis result for SHA-256 556d2964945260aa…

MALICIOUS

PDF

96.0 KB Created: 2021-04-01 23:43:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a756a0a3ab258e83b5101aaca8665f2f SHA-1: 25d0b67369679fb88b9d7ba43a671b4ec731183e SHA-256: 556d2964945260aa50f3634451091d8e4de0eab400811ba2cca7d3b984cfd90d
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. ClamAV also detected it as a phishing trojan. The document body, though heavily obfuscated, contains text related to 'ssis tutorial w3schools' and the authoring application, suggesting a lure to a potentially malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://nipisod.ru/aws?utm_term=ssis+tutorial+w3schools
    • https://static.s123-cdn-static.com/uploads/4419623/normal_6006633b0f252.pdf
    • https://cdn-cms.f-static.net/uploads/4403417/normal_602a6d652dcc9.pdf
    • https://cdn.sqhk.co/miburixegapu/jcihijf/roblox_games_to_play_online.pdf
    • https://static.s123-cdn-static.com/uploads/4375507/normal_5ff3f9313ec9e.pdf
    • https://cdn.sqhk.co/loziromegon/jbpjez2/17841606606.pdf
    • https://cdn-cms.f-static.net/uploads/4382972/normal_6061ce56920a0.pdf
    • http://gijipodotetojo.22web.org/vujudojedidak.pdf
    • https://static.s123-cdn-static.com/uploads/4422133/normal_5fef82898a5c0.pdf
    • https://cdn.sqhk.co/tosolizidovi/Boxgc8g/cartoon_video_maker_application_download.pdf
    • https://cdn.sqhk.co/gajerivab/EggKia2/xobenowalawepawelubiwiz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/be4ad87d-29f9-4f06-acd0-93b0f5671a7e/zemudilasine.pdf
    • http://majikujiva.epizy.com/cirque_du_freak_book_4_read_online.pdf
    • https://uploads.strikinglycdn.com/files/b7ffcc07-d579-4454-94da-17dc770ef532/maytag_3000_f20_code.pdf
    • http://suziwifu.rf.gd/4843558206.pdf
    • https://uploads.strikinglycdn.com/files/892d103c-ac0b-422c-b05a-2b384a36fab4/fokaxejomajesopawazelir.pdf
    • http://wuwomuwudawim.epizy.com/kuttymovies_2019_tamil_movie.pdf
    • http://bekujosekufeto.epizy.com/juludiwulijorup.pdf
    • http://vizebafep.epizy.com/samples_of_argumentative_essay.pdf
    • http://muwefiwegopu.epizy.com/amar_ujala_agra_news_paper.pdf
    • https://uploads.strikinglycdn.com/files/8a93b302-9cca-4eda-852d-089c7e5e1641/zakiponogatejosu.pdf
    • http://wuguwusilabibax.epizy.com/coming_soon_html_templates_free.pdf
    • http://wujumowe.rf.gd/29719524873.pdf
    • https://uploads.strikinglycdn.com/files/99b1f134-9c24-40d4-a781-ee47b277dda4/lixakibota.pdf
    • https://uploads.strikinglycdn.com/files/61428cfb-5152-4ea1-b0a1-636fea8de7e3/84367627391.pdf
    • https://uploads.strikinglycdn.com/files/1a3cf374-a51d-45c3-b47c-3fb5b2bb4e22/computer_bookshelf_desk.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013898.bin
133bafbca6eb3fdc0de4b920cd5a3bce3fc6a124ced7b106ab55c7ea65314f0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13898 5248 bytes
font_01_sfnt_off00014a75.bin
c8e6be59d720832655f3554f22624ceaeeb0bf43176a554f35fc1c00644d0b03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14A75 11228 bytes

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