Malicious PDF — malware analysis report

Static analysis result for SHA-256 40df1363bce9d13d…

MALICIOUS

PDF

66.9 KB Created: 2020-11-13 01:41:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ada9e29cfdbe81e360b7a4275d219242 SHA-1: 908c7acfad75f32509bf8e5fd6d4304138a7a3f7 SHA-256: 40df1363bce9d13dc6efe6c2a4331969b633977bc3caf32227e50ed75ba92bd1
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffking.ru/123?utm_term=elkhart+county+sheriff+sale PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369776/normal_5f9bb85b1f7ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377410/normal_5f8b9cbc1f156.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/divexikav/galirifikilufibabedeg.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/cartoon_nursing_home_images.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/gemefufok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44993da6-5a1c-4f55-8f23-c6d20adbe1fd/42627059165.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/1969_dodge_challenger_project_car_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/sibenuvokiwuz/rooftop_snipers_2_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adb1d58b-8ac9-4c26-bb6e-eaa0c624325b/mechanic_full_movie_download_filmyzilla.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/biblia_ilustrada_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/basic_house_rental_agreement.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_off0000c9b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9B1 5092 bytes
SHA-256: c93cc9f711f76442ce25a5765fec7480c2683d7ca2119b7e93b499c9ff544933
font_01_sfnt_off0000db06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB06 11248 bytes
SHA-256: 5913dda8fc5d5fb08eaba245ee38b44679051aaeda4003f0d19325b087af842b

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