Malicious PDF — malware analysis report

Static analysis result for SHA-256 63682bc51d351516…

MALICIOUS

PDF

77.2 KB Created: 2021-03-18 07:37:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 081f114b54d73c4ca2bdcdebf373850e SHA-1: 299da22dd05144ffa374189ee3e68da15de3d872 SHA-256: 63682bc51d351516be02e7f72f3cac0e5b8cb2c04a95dd262e045859778ce85f
136 Risk Score

Malware Insights

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

The file is a PDF that contains a lure related to a 'home depot' book download, directing users to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the presence of external URIs and the nature of the lure suggest it's designed to lead the user to a malicious payload or phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://fokemale.ru/wix?keyword=home+depot+home+improvement+1-2-3+book+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4491965/normal_60181f72a52df.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/1ghhbgf/betway_login_kenya.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/ghbgg7L/83615252152.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494139/normal_5ff083246d25d.pdfIn PDF document text
    • https://cdn.sqhk.co/letaziseb/bhahjjp/welibavi.pdfIn PDF document text
    • https://cdn.sqhk.co/mekibekowufe/TPnHoid/kewexujejugo.pdfIn PDF document text
    • https://cdn.sqhk.co/gipirukanut/Gid4ghj/72027175977.pdfIn PDF document text
    • https://cdn.sqhk.co/notizejamebo/oIYr6Zr/avery_5267_label_template_excel.pdfIn PDF document text
    • https://cdn.sqhk.co/xutijexop/g9gfieS/razer_blackshark_v2_vs_v2x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486051/normal_5fe32f0f42a02.pdfIn PDF document text
    • https://cdn.sqhk.co/susojitigi/iaLihhj/rawezitub.pdfIn PDF document text
    • https://cdn.sqhk.co/padixemugex/ijZkjdf/50069790640.pdfIn PDF document text
    • https://cdn.sqhk.co/xutijexopIn macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/12017be7-d980-4534-b356-4b23af5b5815/gubadu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/415bda95-51af-4394-b486-fbb11f87a779/a_christmas_carol_movie_1951_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/58562890059.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6407ae3a-c9bf-4330-af70-8e70d7595735/sas_proc_univariate_histogram_axis_label.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/numbers_mac_inventory_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/docker_cmd_shell_script_not_found.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/alternate_and_corresponding_angles_worksheet_with_answers.pdfIn macro / runtime command snippet
    • https://uploads.strikinglycdn.com/files/2f412da9-2a2f-4b2d-81ee-1c106763f678/6933215957.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/dinixa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b991768-bfb6-4329-a564-2c9e01aceacd/guxegazakokonebif.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/walmart_cashier_job_description.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/58351556281.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/almost_is_never_enough_sheet_music.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_off0000eb94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB94 5800 bytes
SHA-256: b7d9b3558b83495828bf98248988464cfad744695c81c22eadccef37c6828403
font_01_sfnt_off0000ff44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF44 11456 bytes
SHA-256: 0bf0f71cd29b7950466bd4807d8adc03050824fcc88861184a4b3cc0e5d56338

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