Malicious PDF — malware analysis report

Static analysis result for SHA-256 76b4f3967afb5575…

MALICIOUS

PDF

60.3 KB Created: 2020-11-25 21:07:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f4b33d3de27461902849725189544b76 SHA-1: eff67fab7907fa25deb69daad4e2962419c35780 SHA-256: 76b4f3967afb557575c4b7ee5060946c9709484865dfda22b98b7c2e45874e7e
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 0.9993

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://trafftec.ru/123?utm_term=lg+upscaling+dvd+player PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4443608/normal_5fad12b94d3f5.pdfIn PDF document text
    • https://laxozutamof.weebly.com/uploads/1/3/4/7/134748247/7582074.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/wutezigojuxi/fukuwavonuguzop.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/carrot_information_in_kannada_language.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/ugc_net_commerce_mcq_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8405c1bc-1775-4332-b25c-cf36db0f5137/verizon_directory_assistance_phone_number.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/vw_app_connect_android_danmark.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/website_to_unlock_chegg_answers_for_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/mezexasamuxufavejusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50d57dea-c7c8-4ab0-8d80-24ff30ceb3dd/how_to_draw_modern_florals_free.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_off0000af46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF46 5344 bytes
SHA-256: 0097098f6048859e96a3411b743f1eeec900e94eceffa8f92859aadfaf17f730
font_01_sfnt_off0000c19b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC19B 10168 bytes
SHA-256: edd9b99f79eaa571de62cb9bc943525d16a7d08fe523215a77699234ea207241

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