Malicious PDF — malware analysis report

Static analysis result for SHA-256 09bd49034cd85310…

MALICIOUS

PDF

75.8 KB Created: 2021-05-21 00:39:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 8c973818d3e0fea36f7370462541e0ff SHA-1: 15f8666bd98a5dfcb11c98349be0d4ff9d6513f0 SHA-256: 09bd49034cd85310efce89aae81d20489d099ee67e097c05a0134a58ed26234a
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL disguised as a search result. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URL is the primary indicator of compromise, suggesting a redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://bologen.ru/wb?keyword=avital%20remote%20start%20near%20me PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450154/normal_5ff0b00d51134.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501789/normal_5fef0afac874a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_60304f3d81db9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475859/normal_601ee32d8ee63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383295/normal_604666ca5c9f4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f33511ee-399c-42b5-a5e1-79879fd428bb/ridixaloxumolitosa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b866401f-78b0-41f8-9235-43166583dedf/mole_concept_numericals_class_10_icse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/563b090d-bc32-4f8b-b150-0adac607f2a0/gafotojodepeverof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b2c782b-0297-4ea9-92e6-ce6856636b07/simbolos_diagrama_de_flujo_ingenieria_industrial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2913b3c-46a0-44fa-b358-2ab82fd78a10/how_to_use_voldyne_spirometer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfc1cf1a-0cc3-48cc-b93e-c4927cd38624/dimezubawunorez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2ba9d37-a97b-482b-ba61-0bdb6030bc85/90784863974.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efe651c6-e732-4493-9058-051a2cd4e781/the_hidden_oracle_series_in_order.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/407c2c4b-25eb-477e-819c-3e42c30eb36c/what_factors_influence_social_perception.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff851d2b-98a1-442b-9b9b-ce37ec434f1b/28775200801.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c637c4a1-1e38-4267-bd47-435b2f2954e4/39249952973.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ad5ba94-118f-47f5-9a3c-a8879d23af19/wdtv_live_hd_media_player_firmware.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_off0000eb25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB25 4880 bytes
SHA-256: 829769fa423e5a1810526351e431faaf47694a8dc529ea8324822f4de27d2fe0
font_01_sfnt_off0000fba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA7 10760 bytes
SHA-256: 9a79e4cf34a6926efca78906e891332116922b8a4a0a1dc45760c22ed8c405a9

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