Malicious PDF — malware analysis report

Static analysis result for SHA-256 14671f1693f77b53…

MALICIOUS

PDF

72.6 KB Created: 2021-03-09 15:38:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d05a62a8a39fd2ef6c305e65fb2474ef SHA-1: 28e610529c2856a6ac39a7aa16928ad2aa593290 SHA-256: 14671f1693f77b5364c4c462b67fe5f11ede7f7a844334f8d6ef71d33bc2293d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of malicious intent. The ML classifier and ClamAV detection further support this assessment, flagging the file as malicious. The document body, though heavily obfuscated, appears to be a lure related to a book title, suggesting a phishing or malware distribution attempt.

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/wix?keyword=starting+out+with+java+6th+edition+solutions
    • https://cdn.sqhk.co/jesotipo/ghigEJg/jedagimot.pdf
    • http://nuwetiveguvo.mypressonline.com/xaxipavopuziletomiwefo.pdf
    • https://cdn.sqhk.co/weteroliwo/ihifIjS/stealth_master_assassin_ninja_game.pdf
    • https://cdn.sqhk.co/petebeki/Ehghciu/sling_bag_vs_purse.pdf
    • http://juxowupekabaf.mygamesonline.org/epson_artisan_730_specifications.pdf
    • https://livesagu.weebly.com/uploads/1/3/1/4/131437401/zemifab_tesuxavin_borukikutaw.pdf
    • https://wefupavoxed.weebly.com/uploads/1/3/2/6/132682659/vonogibekofataj.pdf
    • https://xikanunifozale.weebly.com/uploads/1/3/1/8/131860479/vofefobibuputameg.pdf
    • http://sevezor.scienceontheweb.net/how_to_prepare_a_vegetable_garden.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nuvukivaxiren/92209091761.pdf
    • http://kapowuxivi.atwebpages.com/old_mans_war_book_series.pdf
    • http://xifeloj.onlinewebshop.net/electric_circuits_nilsson.pdf
    • https://uploads.strikinglycdn.com/files/940aaa36-a5a2-42d0-a3a1-1dc7cca91f80/1860452148.pdf
    • https://uploads.strikinglycdn.com/files/9f3694ed-0a14-432b-9d5b-202a706f1060/is_there_a_sequel_to_cinder.pdf
    • https://s3.amazonaws.com/sefabe/97417611131.pdf
    • https://uploads.strikinglycdn.com/files/b910fd01-c20c-4ac1-b522-58603665ce16/jokowipemunerizevikupum.pdf
    • https://s3.amazonaws.com/nawuvud/3gp_movies_telugu_2018.pdf
    • https://s3.amazonaws.com/vapite/carbon_dioxide_from_antacid_tablets_lab_report.pdf
    • https://uploads.strikinglycdn.com/files/41ced777-87de-4fb6-94b3-88f275b15d47/mekolazafuxawo.pdf
    • https://s3.amazonaws.com/bezorito/clear_acrylic_sheet_secondary_glazing.pdf
    • https://uploads.strikinglycdn.com/files/b7ce7467-5758-43e0-8123-ad31cb2a79d4/troy_bilt_675_series_190cc_lawn_mower_parts.pdf
    • http://suduxegowur.onlinewebshop.net/52735205455.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_off0000ddde.bin
7e34c179243896580376a3e9fb8312df73c6fa1e3bce873f46d60bd2d7a72126		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDE 5572 bytes
font_01_sfnt_off0000f0dc.bin
427db9b4fd9bc7078070225d3d51e5810fc1ce617bdf696ac4bd51be32acc1a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DC 10464 bytes

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