Malicious PDF — malware analysis report

Static analysis result for SHA-256 efbb981750b4da71…

MALICIOUS

PDF

82.2 KB Created: 2021-04-08 05:25:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 7b23c601df05973dfd66a5fa54dbed78 SHA-1: 68adbf3de734929d2e7b9b166fdc7c40f22be326 SHA-256: efbb981750b4da71c37a13e28519e4269de2daed2edc54cd484b71ab325c18ed
116 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as a phishing trojan. Heuristics indicate it contains an external URI and a callback phishing lure, suggesting it aims to trick users into contacting a malicious entity. While no scripts were extracted, the presence of an external URI and the phishing lure strongly indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://soxebez.ru/wix?keyword=between+me+and+the+world+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4458161/normal_6009fe4841feb.pdfIn PDF document text
    • http://xariketixagat.mypressonline.com/hp_laserjet_4200_maintenance_kit_part_number.pdfIn PDF document text
    • http://mezajozugabaso.getenjoyment.net/8849632132.pdfIn PDF document text
    • https://cdn.sqhk.co/fofateze/widAhhV/world_war_1_history_textbook.pdfIn PDF document text
    • https://cdn.sqhk.co/fatepotax/My5fhft/ninja_smoothies_blender.pdfIn PDF document text
    • https://cdn.sqhk.co/nalawanuxa/gcIxDhc/how_to_start_your_own_planner_sticker_business.pdfIn PDF document text
    • https://cdn.sqhk.co/wimedizi/dBbgd4P/87851339151.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490371/normal_5ff84bd53090c.pdfIn PDF document text
    • https://cdn.sqhk.co/toxinize/phbyjbt/best_deal_discount_coupon_code_for_amazon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/putelekireza/tn_sslc_half_yearly_answer_key_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45418162-f21d-4fbb-ae1e-6daff00f1a10/qu_tipo_de_sistema_de_informacin_gerencial_debera_tener_la_organizacin.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/adverbs_list_for_kids.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcde4a15-910d-4417-b7cc-d9dc6fe4c4fa/garmin_vivosmart_4_manual_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/suzadufilavizujigonepe.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/yankee_doodle_boy_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/devuxuzejozam/sociology_of_religion_malcolm_hamilton.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/761d8088-18d4-4989-9305-5c7c3508c8b2/japajojis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db490bad-f381-4be4-9038-82fbaf958f13/is_baby_boy_on_netflix.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/place_value_hundreds_tens_and_units_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/vsphere_6._5_enhanced_authentication_plugin.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/kofogitafamurozujilator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/feeba8e4-9916-4ff3-87e9-3c912044365c/what_are_the_five_principles_of_social_justice.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/31798903932.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/happy_belated_birthday_gif_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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e713.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE713 3396 bytes
SHA-256: 30501d06d88b2dddfd3e0bb265e791353b68d0d1f9949601d8098928c07db554
font_01_sfnt_off0000f323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF323 4984 bytes
SHA-256: b5698d088870efddf4d0eeba6e1929b38fc9582a09327b5d48ce438f29060830
font_02_sfnt_off000103f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103F0 11664 bytes
SHA-256: adf01eb3a6dd948692739e3fd168c99fd01dd1f5b962145d2ab9c5097be8e794
font_03_sfnt_off00012b1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B1C 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f