Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa5b82dc6bfe69d4…

MALICIOUS

PDF

76.0 KB Created: 2021-04-07 13:29:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d3307b0f012f05389bf5e0457b9340f SHA-1: 44d18d5db6178f3c568fc0a192d7c5569c8de1cc SHA-256: fa5b82dc6bfe69d4442a866953550e416f1b9fef2f66894879cf036c5b7503be
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'resalured.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, suggests a lure related to 'Igloo ice103 troubleshooting'. No scripts were extracted, but the presence of embedded URLs and the ML/AV detections strongly indicate a malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/aws?utm_term=igloo+ice103+troubleshooting
    • http://particulier-societegenerale.xyz/whirlpool_cabrio_washer_and_dryer_red607gs.pdf
    • http://astropsychology.site/what_does_australian_sandalwood_smell_likeexwjt.pdf
    • https://cdn.sqhk.co/dolavalof/e0Dheic/kivofuxonumebepox.pdf
    • http://helper-badges.com/bagenubajibujojevk3aug.pdf
    • http://insurancecarusa.com/golugikokokudabfban.pdf
    • http://batmbatm.ru/why_does_my_realtek_audio_manager_keep_popping_upnycer.pdf
    • https://cdn-cms.f-static.net/uploads/4468550/normal_605f3efa7215b.pdf
    • http://in-step.shop/vokixonegudevvo2eb.pdf
    • https://cdn.sqhk.co/valujoper/cEINjdh/lloyds_online_download.pdf
    • http://ru-order-687646765445.art/bedtime_stories_movie_netflix0e7j3.pdf
    • http://particulier-societegenerale.xyz/balabrohs5.pdf
    • https://cdn.sqhk.co/kafosine/urgjgdr/dreams_langston_hughes_worksheet.pdf
    • http://zhenskiizhurnal.ru/61169501833w9uoi.pdf
    • https://cdn.sqhk.co/runudori/dgdibjj/kgf_tamil_movie_theme_music_ringtone_download.pdf
    • http://parralax.net/how_to_clean_kenmore_quiet_guard_dishwasherqzb0o.pdf
    • http://skameyki.club/hampton_bay_ac-552_light_kitujoov.pdf
    • https://static.s123-cdn-static.com/uploads/4415767/normal_60028013bf167.pdf
    • http://mp4.design/texas_politics_today_18th_edition_ebookc8n3q.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zidosozawok/dyson_dc35_wash_filter.pdf
    • https://s3.amazonaws.com/baxegezivumi/boston_market_chicken_pot_pie_price.pdf
    • https://s3.amazonaws.com/luborinizu/wujifemolimasilaxak.pdf
    • https://s3.amazonaws.com/wovitiku/variance_and_standard_deviation.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_off0000ede4.bin
a3d5b2863aa8fda044cd8d20fefb6f357290fb7d4491cefa884328f1ffabc74d
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE4 5288 bytes
font_01_sfnt_off0000ffe8.bin
a2e3cb2c32008339becec7d088da4332d783c070a195f1b26a55533d271ed113
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE8 10276 bytes