Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca911ce29e765338…

MALICIOUS

PDF

123.9 KB Created: 2021-05-06 04:21:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 5e43039d30e5105b7b625321ceea8260 SHA-1: 053bf053e14f72915fa5753b882f4d6b4ea2a77e SHA-256: ca911ce29e76533873e2ba5ddbe490810aa72bc0cf735e3a26cdedede37a75bf
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by heuristics as an external URI and an embedded URL. ClamAV detection and ML classification strongly indicate maliciousness, specifically a phishing or trojan threat. The document body, though heavily obfuscated, suggests a lure related to a 'wiring diagram', which is a common tactic for 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/strik?utm_term=castle+sidewinder+3+wiring+diagram PDF link annotation
    • http://armlur.space/rugaxoxobajibotuzalyr85.pdfIn PDF document text
    • https://cdn.sqhk.co/lojumisebu/djdp7iw/the_last_survivors_book_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/xakurusuk/gOQje6h/rocketbook_review_left_handed.pdfIn PDF document text
    • http://karnaval.host/nozotuzemafemenuzifivurq3ss.pdfIn PDF document text
    • https://cdn.sqhk.co/fekebazi/Jgibica/salusilejate.pdfIn PDF document text
    • https://cdn.sqhk.co/majukedow/phhm0GO/36872422918.pdfIn PDF document text
    • https://cdn.sqhk.co/tofatuxurejo/14hegeY/38305176467.pdfIn PDF document text
    • https://cdn.sqhk.co/kowaziwaso/CgcifyF/rafolam.pdfIn PDF document text
    • http://eu-study.ru/apostolic_and_prophetic_ministrynxt6n.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/ijjfjhn/ball_resurrection_game_download_for_pc.pdfIn PDF document text
    • http://probkin34.xyz/62442886538p1c1d.pdfIn PDF document text
    • https://cdn.sqhk.co/kojagopomon/PugdTic/15825020523.pdfIn PDF document text
    • https://cdn.sqhk.co/jeforije/fpCdEeu/battleclaw_song_lyrics.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/hairstyle_editing_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/476cd55a-9893-41e4-9920-39a982f6531b/kugavuwokujafoguso.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/lifiwusixudijoziwifixas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa8ff6af-4ef8-4408-8a3c-69d999630af0/windows_7_command_prompt_tricks_and_hacks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a55909b-a90e-4506-b78f-087423db7610/miss_peregrine_home_for_peculiar_full_movie_hindi_dubbed_download_filmywap.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/instagram_videos_ios_11.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3b49663-60da-4823-a135-bc5f36300a4a/285452800.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/63940989024.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8a0b25c-a8ed-4d2b-ba25-1b1d3242ca9a/anime_boy_drawing_step_by_step.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/jilagewitoluvekul.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_off0001a7f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A7F6 5308 bytes
SHA-256: c0e38e0914519deeebc35667371f612effc2edaa05381293db383c1cdff95287
font_01_sfnt_off0001b9f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B9F8 11660 bytes
SHA-256: 61e9c96c43293c18e4c0e7eda2fae79d74f8cb214476d9c11b95121ec2b71a66

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