Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff3d9556b3dc716d…

MALICIOUS

PDF

164.6 KB Created: 2021-03-05 01:58:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 4f56bc557c1bfd628b180a4e3b784e8a SHA-1: 16803644d7087b3069a31a2d8099e7cdf573e32f SHA-256: ff3d9556b3dc716d1cad2b80cf54310122174e3b079788500f9e44d4b752db3a
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-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://jottigo.ru/123?utm_term=scott+pilgrim+vs+the+world+cast+brie+larson PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4470962/normal_5fcff392a46ad.pdfIn PDF document text
    • https://cdn.sqhk.co/feneradebeza/geijfji/92789374331.pdfIn PDF document text
    • http://gedagefi.22web.org/jira_assignee_history_report.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/ZO8Hide/nitebavisatabizo.pdfIn PDF document text
    • https://cdn.sqhk.co/pajubopolak/cgggeYR/world_war_2_aircraft_engines_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/fokatekox/a3Rqijh/ball_bash_stern.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366659/normal_60357485c656f.pdfIn PDF document text
    • https://cdn.sqhk.co/lexaxemiji/hgigGhc/48856181569.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459185/normal_6000407a70e25.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tutalogivenerok.epizy.com/who_is_the_33rd_degree_freemason.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/wii_wont_go_past_health_and_safety_screen.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/2972359053.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/vokozoto.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/gapokapilufolowajusogogu.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/shawn_mendes_senorita_ringtone_pagalworld.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fa2fe24-7683-4fa5-8a8b-c5fd41cf7cba/virtual_lab_the_cell_cycle_and_cancer_instructions_answer_key.pdfIn PDF document text
    • http://tiwojojerat.rf.gd/6512968303.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45d39510-ca63-4328-89fd-cf903b2069bd/ba_ii_plus_battery_life.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/hyperlink_excel_sheet_to_another_workbook.pdfIn PDF document text
    • https://s3.amazonaws.com/figidireki/you_can_bypass_chegg_by_using_textsheet.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_off00024529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24529 5880 bytes
SHA-256: 41913a248fdbb0e59bd5de190660c3d1e18a23a08133d657de913d9085c72f78
font_01_sfnt_off0002590e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2590E 13596 bytes
SHA-256: 6eb9e617e4e00bdb0f7d27d35999bb6805f576812aa7123fcffcfd20fc55c96a

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