Malicious PDF — malware analysis report

Static analysis result for SHA-256 971827790666621e…

MALICIOUS

PDF

75.1 KB Created: 2021-05-24 20:13:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: cc5396dc767f3c972f72ee2cdff1953a SHA-1: de2d03305b481d37be450c9474738e49ba6cadbc SHA-256: 971827790666621e2c311105c8d9cf131bf612ab693ecc704305d5ccefc83887
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a URL that promises a free movie download, a common social engineering tactic. The document body, though heavily obfuscated, contains references to the movie title and the authoring application, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/strik?utm_term=ratatouille+movie+free+download+480p PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4419628/normal_5ff8938b8bd5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402478/normal_6021c0296aaac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481058/normal_5ff558ff8abcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493589/normal_601bdf451430d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375884/normal_5fd90516d00e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471234/normal_60696dc77a9c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449421/normal_602027a80f4b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365586/normal_604463318daed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448110/normal_6030e8470b763.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501201/normal_602b9418345b6.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/5102ce0b-f757-48f7-93ba-39f16e133604/how_to_learn_siemens_plc_programming.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/debaninikisezujufivodowul.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/minecraft_essential_handbook_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bc5f965-0af0-43fc-8191-01cd1d3b905b/tiwiwuwokiwakede.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1ce4c04-4deb-470a-9d49-7a6791d150da/how_to_remove_a_paper_jam_from_an_epson_printer.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/the_adobe_audition_presets_v2._0.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/and_gate_or_gate_project.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/best_dj_songs_in_the_world.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/schlage_be469_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/laying_herringbone_tile_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/sap_customer_success_story_template.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_off0000e6f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F9 5592 bytes
SHA-256: a543a11f84d957a8f9bb85bc7353e4d25bfea573fe19e6a46f44a5ce6908aaea
font_01_sfnt_off0000fa09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA09 10732 bytes
SHA-256: 2fbd29f536ef58c9aa2f8e63374f65023060faf2b6b9c4267aa08327204e315d

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