Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9c48de317875485…

MALICIOUS

PDF

81.8 KB Created: 2021-01-23 18:50:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: cbdc020d9e6e29e68351ceb8d2a0582f SHA-1: 9382b3c003bf7037f2dc0decf658791f67123c98 SHA-256: f9c48de3178754853979479258d29b0886ed4f0ccee8d67a2630b221dc06fd21
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1059 Command and Scripting Interpreter T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. The presence of a 'Clipboard command execution lure' heuristic strongly suggests the document is designed to trick users into executing commands. The file also contains a large number of external links, indicating a potential link farm or redirection mechanism. While no specific script was extracted, the overall structure and heuristics point towards a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://druttle.ru/123?utm_term=traveling+light+max+lucado+pdf PDF link annotation
    • https://neverazu.weebly.com/uploads/1/3/4/9/134901342/765be2124.pdfIn PDF document text
    • https://zibataluguxomi.weebly.com/uploads/1/3/1/3/131382491/sewitefaruwifof.pdfIn PDF document text
    • https://site-1083792.mozfiles.com/files/1083792/cake_decorating_lessons_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374520/normal_5feb1a4028a68.pdfIn PDF document text
    • https://cdn.sqhk.co/sabiwizi/ghcyjcI/auto_followers_for_instagram_app_download.pdfIn PDF document text
    • https://mopebewugo.weebly.com/uploads/1/3/0/7/130776026/fd62c54ec7a02b9.pdfIn PDF document text
    • https://sekeratogo.weebly.com/uploads/1/3/4/6/134683690/kejeno_xezirenat_zojipuj_zojizuri.pdfIn PDF document text
    • https://site-1174390.mozfiles.com/files/1174390/download_clash_of_clans_mod_apk_unlimited_troops.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/0tWgjKX/dwyane_wade_son_age.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425487/normal_5fc693ee8f690.pdfIn PDF document text
    • https://cdn.sqhk.co/niserutom/7hiOIha/merge_magic_egg_chests.pdfIn PDF document text
    • https://cdn.sqhk.co/gibuzini/jbdAFha/neon_live_wallpaper_apk_download.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/wiwamoxamo/angular_5_formcontrol_get_value.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/best_free_video_er_for_android_tablet.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/4003665257.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/57602076884.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/clicker_heroes_2_guide_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/scream_3_2000_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/fajezezorepujujepe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f48e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF48E 5348 bytes
SHA-256: 479aa87afcc210d47b6a5a45a6055bfd84c228ad3ac98469f58fb5e1b43ac119
font_01_sfnt_off00010693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10693 10536 bytes
SHA-256: f5c7b4dc66c53f7986f81a93fa0b4ef13d5215ada0fdf2887c69b6c9f1f417c7
font_02_sfnt_off000129ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129EF 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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