Malicious PDF — malware analysis report

Static analysis result for SHA-256 5966c4cf1e5128e6…

MALICIOUS

PDF

80.1 KB Created: 2021-04-01 02:53:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0671182db52cc877260640e531110f5e SHA-1: b2ceb74b86a92b84d339c74d26929e28e9c81598 SHA-256: 5966c4cf1e5128e60612a50123c59fe2d0db0544e15980b7463fd768811c8d95
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains text related to a search query, suggesting a lure to a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://pelibifir.ru/wix?keyword=what+did+van+helmont+discover+about+plants PDF link annotation
    • https://cdn.sqhk.co/duxadikoti/aLhjoPe/94561192342.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418781/normal_5ff22a8f656c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452154/normal_60626586dcbb5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497093/normal_5feec8a550b62.pdfIn PDF document text
    • http://zeruxejobimal.mywebcommunity.org/ayurvedic_medicine_names_and_uses.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380525/normal_5ffe6fd3e1b26.pdfIn PDF document text
    • https://cdn.sqhk.co/ribafesupuro/if3gcrg/top_100_nursery_rhymes_free_download.pdfIn PDF document text
    • http://jijuduli.mywebcommunity.org/axiom_air_61_driver_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/dewufidabo/z83jj2U/christian_songs_instrumental_ringtones_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/sihkphb/ultimate_farm_simulator_all_bosses.pdfIn PDF document text
    • https://cdn.sqhk.co/nanagajog/gfjba95/offroad_truck_simulator_3d_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383573/normal_602fc53e177c1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nejimafalun.onlinewebshop.net/euro_truck_simulator_2_product_key_crack_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/goroxejagexezo.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/piborase.pdfIn PDF document text
    • http://netawuwimirixor.onlinewebshop.net/barron_s_gre_math_workbook_download.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/the_greatest_showman_all_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/to_buy_in_japanese_te_form.pdfIn PDF document text
    • http://diwavubodinaroj.myartsonline.com/sigifibawikax.pdfIn PDF document text
    • http://gajutar.onlinewebshop.net/5177478377.pdfIn PDF document text
    • https://8a6b9437-e7f2-49d7-8c24-351b272aa67a.filesusr.com/ugd/b18e4d_51990d6b82574a9ba586fe7ebdeb9086.pdf?index=trueIn PDF document text
    • https://d99d9bf7-a5e0-49f2-90ac-0d1bc881463d.filesusr.com/ugd/0182ef_773e96daa0f94974ac9de144e17d3d7a.pdf?index=trueIn PDF document text
    • http://gowepuxajotezo.onlinewebshop.net/using_equations_to_solve_word_problems.pdfIn PDF document text
    • https://7ae774ad-b64d-4473-a0b1-aa0db1e39e83.filesusr.com/ugd/3e7897_dd0e533d52a94dbb85b88564486b9d0f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/kejilaju.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_off0000fb06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB06 5524 bytes
SHA-256: 3ec8b27cce66e59e422cc9057432b4b2b8d09df08ccf328f9499eb4d2f7d1022
font_01_sfnt_off00010dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DAD 10824 bytes
SHA-256: ac579362b054a0d4b9035d1a5729bd1f1f0f1779fadf3ec25e2a8631ec27cacc

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