Malicious PDF — malware analysis report

Static analysis result for SHA-256 83fc6daf747b089a…

MALICIOUS

PDF

76.3 KB Created: 2021-03-09 02:05:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: ccc6b4cd1b26b3e8734f4a44981d9433 SHA-1: 3c569615e00ae5c7d558f0a0cd6a122f9c7c5b5f SHA-256: 83fc6daf747b089a67e07fd051d248a1366aa6368c0da22c22dd94115d8a156c
104 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a suspicious domain, masquerading as a free audio book download. Heuristics indicate it's a phishing lure and a ClamAV detection confirms it as malicious. The ML classifier also flagged it with high confidence. No scripts were extracted, but the overall pattern suggests a phishing attempt to trick users into downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/aws?utm_term=louis+l%2527amour+audio+books+free+download PDF link annotation
    • http://busimaderule.mywebcommunity.org/foscam_fi8910w_reset_password.pdfIn PDF document text
    • http://vuzetasavuxoso.mygamesonline.org/agile_estimating_and_planning_cohn.pdfIn PDF document text
    • http://lobulezinovux.medianewsonline.com/how_to_use_addi_express_knitting_machine.pdfIn PDF document text
    • https://cdn.sqhk.co/gajalalike/ihifhdz/schedule_template_free_excel.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/topezuxazazulurojarize.pdfIn PDF document text
    • https://cdn.sqhk.co/xilobotinisi/gdHiiS4/2004_chrysler_crossfire_repair_manual.pdfIn PDF document text
    • http://fafesixokegigi.getenjoyment.net/three_estates_of_france_definition.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fadudenomo.onlinewebshop.net/what_is_the_meaning_of_a_narrative_paragraph.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/80353491146.pdfIn PDF document text
    • http://miganuvag.myartsonline.com/love_poems_pablo_neruda.pdfIn PDF document text
    • http://zutugidod.onlinewebshop.net/john_deere_zero_turn_lawn_mower_with_bagger.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/90493871863.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/zakerolokuwobifizepel.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/uud_setelah_amandemen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7928a0c-1193-479a-b8ff-73a24d84420f/jegonuxenure.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/paytm_apk_8._3._0.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a69d3a27-4103-46b9-bf6d-fbbb536111a5/wexibirinizapavatefevi.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/42512378311.pdfIn PDF document text
    • http://telosizaba.onlinewebshop.net/front_page_africa_news_liberia.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/api_testing_with_postman.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/630f6a0b-badd-4bc2-9dd1-ac06845f025a/tatorakikel.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_off0000edf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF7 5324 bytes
SHA-256: eee2ae1abef19d50a8a97b49b3d227d92a9bb69e747066769874e03294753841
font_01_sfnt_off0001001a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1001A 10344 bytes
SHA-256: 5b5e421a510ff15623ae222ed78381c528558e0be950498bc7e99e0d1c5f0c97

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