Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f86dbd2228ee055…

MALICIOUS

PDF

81.5 KB Created: 2021-03-14 10:40:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bd05adeb5682064adec0a45f67a66d1a SHA-1: b8824bb6c86a8416b581586bd360f610c3b8e8be SHA-256: 4f86dbd2228ee0558c48fceb0232cea2820f5c30268fdbd8c5e542e81525d9cf
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 0.9992

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://xajibur.ru/award?keyword=bellman+ford+routing+algorithm+pdf PDF link annotation
    • https://cdn.sqhk.co/dokijesu/62gj6hV/10955794457.pdfIn PDF document text
    • https://cdn.sqhk.co/xizefonuma/bibs8jd/dj_player_app_download_for_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414174/normal_603a578859cf6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464525/normal_60019d6c890eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416514/normal_600636926a69f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464314/normal_602fafefded30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403417/normal_60233bc5ee9e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446395/normal_5fe1b61407c34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417145/normal_604b998e53ade.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/tugafebip/vokulanemuwipuro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ce53867-1fd4-43a0-a0af-ae058c09627e/is_the_silence_of_the_lambs_worth_watching.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1caf14fe-dbe3-4733-ad9c-4aaeb5a62fc3/how_to_make_a_simple_syrup_with_fruit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29d5f1c9-60fc-4f33-a041-91dc4e40c8c2/how_much_does_it_cost_to_recharge_a_mini_split.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9f17d70-d2c3-4bbe-8577-35b31a88f54a/11377618188.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/785df401-e43e-479b-80e8-0b0bcc191922/26769848323.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e860f1cd-5cdf-4b68-ac3c-f30b0b0bd568/el_pollo_loco_menu_megamall.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/nudora.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c06d0e12-d7a3-4dca-bfe1-31726ae5a80c/zofigosoremererunutiv.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/what_is_an_example_of_a_quantitative_research.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/828dda68-6207-43ec-9a69-0577550ed667/98329967392.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/begof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac0a52d8-32cd-4192-bc17-77b7465a95b4/langston_hughes_i_too_sing_america_poem_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f128afd-e21f-4e49-9700-129e1ec1f750/zenek.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D0 5324 bytes
SHA-256: a696c30bf8f449b0d31c9fc5de5ccfb66c066786ef7feb6bc12be886ecd7cdf7
font_01_sfnt_off0000fac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC2 11836 bytes
SHA-256: dd704655af3685f5ad614bf71c7619696d36158eef6eed99de6b662a3a366bff
font_02_sfnt_off000122f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122F9 16172 bytes
SHA-256: 67cb0e1a92e3c2e769412e1d7bd55252ffaccc5ac3e10b279655dc28e07d1a81

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