Malicious PDF — malware analysis report

Static analysis result for SHA-256 22d663ecce4b9c0d…

MALICIOUS

PDF

72.1 KB Created: 2021-03-25 18:12:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 107fe207f81b8cb7c88cadc771172400 SHA-1: 9a0d05f8892e3c46ba75d2e00ac557e5ccbcde93 SHA-256: 22d663ecce4b9c0dd31bdad47e115ecbc93401510ca99199b1d959f3dbda973d
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ponafet.ru/wix?keyword=islamic+word+search+answers+big+birds PDF link annotation
    • https://cdn.sqhk.co/moxelutedoje/XibYugc/mods_for_minecraft_windows_10_2020.pdfIn PDF document text
    • https://manesufepal.weebly.com/uploads/1/3/1/3/131381078/8041681.pdfIn PDF document text
    • https://cdn.sqhk.co/jiguluzufuwa/1yLAshY/ligufusivoxikuxisil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456999/normal_602d80341501c.pdfIn PDF document text
    • https://wofarugufi.weebly.com/uploads/1/3/4/6/134657174/7463968.pdfIn PDF document text
    • https://cdn.sqhk.co/jalotenabo/IIggPO8/marshmello_face_mask_diy.pdfIn PDF document text
    • https://cdn.sqhk.co/muvotugi/O1Ngcii/las_vegas_visitor_news.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452372/normal_600281a79c036.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493610/normal_604f66711772b.pdfIn PDF document text
    • https://cdn.sqhk.co/fumodolanes/urCwhj8/hocus_focus_puzzle_books.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530323/normal_6007736e299dd.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/jajoxulabojaso/nature_and_scope_of_geomorphology_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/the_hollywood_reporter_bts_interview.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/worship_backgrounds_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/91888023836.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/60363281618.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/duvomelobuv.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/how_long_do_ryobi_40v_batteries_last.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/diwinonimafimowema.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/ley_aduanera_2017_word.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d126485d-7bca-4bb5-9e3e-02e1144a2c37/98912490679.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da722bbc-f6c4-4722-a470-3fde43ffe13d/what_are_the_5_themes_of_geography_examples.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_off0000dbaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAA 5520 bytes
SHA-256: 30fe402e54313b0d6ce217cd002c405e140bb2f2b9390307f8e1381fbd0432aa
font_01_sfnt_off0000ee51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE51 10728 bytes
SHA-256: 79fc3802ba59a6247dfd538fbc58a022d075168caf7e1bcaf8685f530a979920

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