Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecc72eb5c69c8509…

MALICIOUS

PDF

74.7 KB Created: 2021-04-05 03:43:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 4515ee46b6b2ea5c179886665b3915d0 SHA-1: 51d9305f0cd021dcecbd05793177dfdade552fb3 SHA-256: ecc72eb5c69c85094eb94d2a02180227002e820a83d251c31dfa4685c8160b04
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 0.9997

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://nipisod.ru/strik?utm_term=honda+gc+160+pressure+washer+oil+change PDF link annotation
    • http://gibelepij.scienceontheweb.net/19159795261.pdfIn PDF document text
    • http://mirijesuwakug.sportsontheweb.net/appendicite_aigue_et_grossesse.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379968/normal_5ff9c330a1c63.pdfIn PDF document text
    • https://cdn.sqhk.co/rapawaferew/fkhhK4k/781189182.pdfIn PDF document text
    • https://cdn.sqhk.co/bafuberudod/h7ihd2q/potemajoduritovipomi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481510/normal_600ed08a7c727.pdfIn PDF document text
    • http://kolegutoravi.mygamesonline.org/gukegoturuz.pdfIn PDF document text
    • https://cdn.sqhk.co/gewewoturila/WiXrhga/pro_car_simulator_2020_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473445/normal_6046621709bc2.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/ihjejjj/gadexopuwefanatubapewiwub.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://76a725e8-946c-4ae9-9249-cda469d35108.filesusr.com/ugd/83c8cc_49407068f1fd4f89abba5c296a86df18.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/19561169353.pdfIn PDF document text
    • https://2efabd41-1f95-43d0-8245-5f8eb9267247.filesusr.com/ugd/2f4ddf_97b3d4df65d24ed28eb8bbc2de6f6b78.pdf?index=trueIn PDF document text
    • https://1f571a09-6495-4108-bd1a-9715deae29b5.filesusr.com/ugd/b0bf26_9b0257fd93ea4a098e0bcdd8a9dffb00.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/safuw.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/sig_sauer_p226_rx_romeo_1_slide_kit_sig_p226_rx_rmr.pdfIn PDF document text
    • https://0f926834-650c-4d5a-b53c-ad60ae412ccc.filesusr.com/ugd/6a44d8_3c64ecc07f3a4288be9de93208d4078b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/dantes_inferno_summary_canto_16.pdfIn PDF document text
    • https://21e323bd-7fdd-46e9-a6c7-4880e76d7610.filesusr.com/ugd/0a51c1_93fb8788b7ba4ba7bbbfbb90380a3b30.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/remavuj/active_and_passive_voice_rules_with_examples.pdfIn PDF document text
    • https://30de3caf-c510-4ce9-8691-b8280dc60d9b.filesusr.com/ugd/4980ee_be6f8d958d9d41baa4c935a2f6bb140b.pdf?index=trueIn 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_off0000e4ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4EC 5736 bytes
SHA-256: dfecd7c3eb43f8d26ee33cb40c4a2bf6a794c4d4e14d9a69cdf54a2d02552e7b
font_01_sfnt_off0000f883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF883 10744 bytes
SHA-256: 36ab62421d7615690a38a0626d1fdd80bd54be52a77f6517b1fad9e4676a7b04

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