Malicious PDF — malware analysis report

Static analysis result for SHA-256 752c1fe671c819fb…

MALICIOUS

PDF

84.4 KB Created: 2021-05-13 20:36:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: d13207f14399ef55b80376b4ab2d343a SHA-1: b028579eb2313e27d01b998d6243327e80df65a9 SHA-256: 752c1fe671c819fb609d717e387d529c5b87f58275febf33231e395da0f15c06
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. Heuristics indicate the presence of external URIs and a ML classifier flagged it as malicious. ClamAV also detected it as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, appears to be related to technical schematics, likely a lure to encourage download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://kuzutuzo.ru/strik?utm_term=esquema+amplificador+de+pot%25C3%25AAncia+1000w+pdf PDF link annotation
    • https://cdn.sqhk.co/rudolikube/MjcP5hi/gidamu.pdfIn PDF document text
    • http://laxogapajoze.getenjoyment.net/the_aryavarta_chronicles_book_3_kurukshetra.pdfIn PDF document text
    • https://cdn.sqhk.co/tixunadegu/Cgdijhh/correct_way_to_sharpen_mower_blades.pdfIn PDF document text
    • http://gexopidikimo.mygamesonline.org/wezexupesubujofaxujabo.pdfIn PDF document text
    • https://cdn.sqhk.co/vipikunowi/j7FijHR/boston_commuter_rail_map_overlay.pdfIn PDF document text
    • https://cdn.sqhk.co/fekoguwiwu/9boqhjO/gelese.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/9RThegi/traffic_tour_apk_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/iaEgKje/throne_of_glass_world_map.pdfIn PDF document text
    • https://cdn.sqhk.co/wanazofemuvu/hgidDij/super_slime_sam_in_spanish.pdfIn PDF document text
    • https://cdn.sqhk.co/bebomopakax/hjidiWE/78741265051.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/kalaju.pdfIn PDF document text
    • http://wilosokanik.myartsonline.com/demisedudinerufipog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdc33963-0ac7-4e7e-81fa-6923712ba641/bogedevugigu.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/dongri_to_dubai_marathi_ebook.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/automation_testing_resume.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/kobiduzana.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/sawopopuxi.pdfIn PDF document text
    • https://s3.amazonaws.com/farokof/homelite_leaf_blower_vacuum_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/969a5d6b-0c85-48d8-a4c3-ac9fffeb39cf/what_is_the_best_beowulf_translation.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF973 5700 bytes
SHA-256: 00a4c235a72b1a442aeb985c16b2907eda18abd7e3bd2ecef4648e3e8fe233aa
font_01_sfnt_off00010c8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C8F 12804 bytes
SHA-256: e5487edfeb79e40b4dcbe85f4c3de75406b2b1acecacd4536f3b09dc4e649d91
font_02_sfnt_off000133e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133E3 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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