Malicious PDF — malware analysis report

Static analysis result for SHA-256 067bde63d47bad89…

MALICIOUS

PDF

74.1 KB Created: 2021-04-02 17:51:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 3bc6528383a245104dfc73f2919b5341 SHA-1: c4097c044d460316c77f7bc549392bc69805c364 SHA-256: 067bde63d47bad89d3ffd23d3edf6451f3fb8ef6dcc4f204c3358e6e30f9fbbc
96 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan distribution attempt. The document contains embedded URLs, one of which is http://feedproxy.google.com/~r/wb/ENAH/~3/B9wesDdUo4k/wb?keyword=how%20to%20identify%20defective%20diode, which likely serves as a lure to direct the user to a malicious site. No scripts were extracted, but the PDF structure and heuristic firings suggest it's designed to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://cdn-cms.f-static.net/uploads/4477367/normal_605afe98ba1a6.pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4419425/normal_603cad99b8d58.pdfIn PDF document text
    • https://cdn.sqhk.co/nemoludajedu/chigika/advanced_hepatocellular_carcinoma_icd_10.pdfIn PDF document text
    • https://cdn.sqhk.co/dinigivo/eSSihig/gem_mines_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388157/normal_5ff2bf0c2d6b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444357/normal_6012c1150e403.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462352/normal_5ff7ba657f6e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368250/normal_6032d94c081f5.pdfIn PDF document text
    • https://cdn.sqhk.co/nojedajoze/hpuXJTo/google_wifi_router_speed_slow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/B9wesDdUo4k/wb?keyword=how%20to%20identify%20defective%20diodePDF link annotation
    • https://s3.amazonaws.com/xakusineba/intcos2x_sin_xcos_x2dx_is_equal_to.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8556104-dc5e-4d5f-bb51-dc251a957d7a/is_there_a_camera_inside_the_model_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16bc675a-dc05-417d-b0cd-07ca7882f399/besadamudow.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/marksheet_sol_du_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/wolawatin/58344446419.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad107b8b-2b48-40d9-9542-10e41c798fd1/52174804267.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/56176816256.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/41216656483.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/zelda_the_missing_link_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/what_is_the_difference_between_professional_and_enterprise_visual_studio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29732486-6493-4d60-b364-bcd7b7e7484b/the_crucible_multiple_choice_test_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58868d17-db0e-4cd0-93fd-ed300d9ca3ac/what_is_the_highest_salary_in_air_force.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/boloxixi.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_off0000e58a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE58A 4716 bytes
SHA-256: 9dbcde1aee0bc8ac2c202118a7125a99a64171833b37d03a9383640b8abcce75
font_01_sfnt_off0000f5cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5CB 10852 bytes
SHA-256: 588ecf859797d7a6d2bac8e78440e71226bb484168c01386fe3368b7bd234541

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