Malicious PDF — malware analysis report

Static analysis result for SHA-256 2605f2631299d218…

MALICIOUS

PDF

74.9 KB Created: 2021-04-02 06:10:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 53a9a56713728777f0af1f455b99037b SHA-1: 562b65cf04046963668abf5df21c01a3c5d95f80 SHA-256: 2605f2631299d218fa46477a0faad046f1ba87ff1f38e69f30a9257637604947
96 Risk Score

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-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://zajinet.ru/strik?utm_term=america%2527s+test+kitchen+recipes+free+online PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387816/normal_600def2a8e11b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493602/normal_605d6a44ed843.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386334/normal_5ff6c59d3cbcf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370791/normal_60181af5675b8.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/6a14f5a2-b6c6-4b4e-bd9b-aec19147006a/parusebuxewatanoritusejiw.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/35914298560.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/jimename.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/loretarujeka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e898aec-93c7-48e8-8db7-ea4627bef3a4/kizarorevureponivit.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/weber_spirit_grill_e310_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/301_1_2_hard_stainless_steel_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dd2ea99-81eb-4ec3-8f83-9a6545c16c05/what_is_the_loudest_roblox_id_code.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/diagnosis_of_benign_prostatic_hyperplasia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad76c387-1ff3-4eb9-b195-da64e970b4fe/70031878920.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7420032f-8cb8-4762-b7e0-d5c76294f6c9/dodefobedofolefojowuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e2c37ae-cbb1-441f-b93a-411e820a1c23/povotaguwobiju.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/piano_music_books_for_beginner_adults.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/city_bike_rider_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b3df8bc-a554-43d1-8f52-b6f8a8b96af4/diccionario_latin_espaol_porrua.pdfIn PDF document text
    • https://s3.amazonaws.com/wowonesoribu/wefiroxofuwafedoladefat.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_off0000e3fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3FE 5340 bytes
SHA-256: 7b282216fc394eb6682b84b0077366a7ab186ff339995b0777d715385c326190
font_01_sfnt_off0000f607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF607 11888 bytes
SHA-256: f42ff8a5ff4109a3d883cc10cec5af2a5d8a1f103b2b52743d43dcb6ad5bcda3