Malicious PDF — malware analysis report

Static analysis result for SHA-256 df5891f595feb66d…

MALICIOUS

PDF

78.3 KB Created: 2021-03-09 23:38:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6b37f95a2cf76fa81430277f23ab1947 SHA-1: 958a1d935be7be8582f196c36815306c2c8b219d SHA-256: df5891f595feb66df1e4021d6b7014d4d9804d1c3213d4d3a8bd6ea5a503bdc1
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://xezojetit.ru/wix?keyword=wardencam+pro+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465007/normal_60174fab8c0b7.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/gcihdje/4_pics_1_word_level_1852_answer.pdfIn PDF document text
    • https://cdn.sqhk.co/mugodetutag/jjahiT1/kid_rock_songs_youtube_all_summer_long.pdfIn PDF document text
    • https://cdn.sqhk.co/xokipuxat/eigBiis/47382756228.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372707/normal_60380af32ba27.pdfIn PDF document text
    • https://cdn.sqhk.co/rotonoba/6QyPiab/kuwarodubamulixibenojug.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/hjpm3Cq/54209823605.pdfIn PDF document text
    • https://cdn.sqhk.co/ramosigobis/giajdic/chicago_weather_report_sunday.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384655/normal_602a3c9667654.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466680/normal_5ff4d3361c0cc.pdfIn PDF document text
    • https://cdn.sqhk.co/sopirisaset/dQeOjbB/cowboys_vs_zombies_mobile_game.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0644286a-f4af-421c-8c8a-df16b065af92/is_lg_rebel_4_a_good_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/5th_grade_language_arts_online_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6453a837-c792-4b48-a948-884e9dd79dac/nail_salons_near_me_open_late_on_sunday.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d53ce960-aaba-4f19-9012-62aa59d30040/gate_2020_books_for_mechanical_engineering.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd50955d-7a8d-425b-b791-6d43f01a6a86/gujitexanemilimupinude.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb9558cd-29c6-4ed8-966e-8afcf22d2d4f/panasonic_cordless_phone_manual_kx-tge430.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/894b0bec-ecd0-4599-94d9-9f1ebf13c7a6/kiwudulowezinajizu.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/7652465905.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_off0000f218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF218 5084 bytes
SHA-256: 788b1fb09e01ad0f0ca0ab184796a16000ae1948f666a8f0055193f058e8c272
font_01_sfnt_off00010362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10362 12800 bytes
SHA-256: bdbf968162ecc31fc380c5e2b50fa2a84299bf31d54028fdae968b7c9618bed8

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