Malicious PDF — malware analysis report

Static analysis result for SHA-256 1547002d79159d5f…

MALICIOUS

PDF

88.1 KB Created: 2021-05-19 15:43:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a20255f4d55dfbaa06ce484d28e1021 SHA-1: 586a9eda7246d0706781d55eaba6e94792140e5c SHA-256: 1547002d79159d5fa0ec7060c125167688d20668655455c4e70c063efeaa7137
104 Risk Score

Malware Insights

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

The PDF document contains a heuristic indicating an external URI and a visual download button lure. The embedded URL points to a site offering a "Clash of Clans hack tool", strongly suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm the malicious nature of the file, likely serving as a downloader for a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://botokaw.ru/strik?utm_term=download+clash+of+clans+hack+tool+for+android
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/019d79d2-26a1-4229-bd62-451ad629d98c/99638564264.pdf
    • https://uploads.strikinglycdn.com/files/b4cf4900-d077-4271-9a34-1f9cae6b6ed9/73999853643.pdf
    • https://uploads.strikinglycdn.com/files/4b0b33ab-2352-4e5c-903c-9f09a3a26266/what_is_economic_development_in_local_government.pdf
    • https://uploads.strikinglycdn.com/files/74b51956-2813-48c3-a680-79edfebbe26d/does_the_cfa_syllabus_change_every_year.pdf
    • https://uploads.strikinglycdn.com/files/9b32f02e-df41-49ca-935e-2a2a594f3de3/69543142449.pdf
    • https://uploads.strikinglycdn.com/files/279a61a7-9b4a-4fb2-9ba6-bc50209c7800/49202358943.pdf
    • https://s3.amazonaws.com/nigimul/enable_android_apps_on_chromebook_g_suite.pdf
    • https://s3.amazonaws.com/vipinib/85617410341.pdf
    • https://uploads.strikinglycdn.com/files/1186d2d5-0a92-4c35-a405-fdf1b2866886/fegigonub.pdf
    • https://uploads.strikinglycdn.com/files/30ee9e12-3a32-43e8-9fee-76b342ae9094/richard_dotts_audio_books.pdf
    • https://s3.amazonaws.com/vatosolikijike/48321448264.pdf
    • https://uploads.strikinglycdn.com/files/c84270b7-d3c4-400d-8771-50f06e1fef04/85954282967.pdf
    • https://uploads.strikinglycdn.com/files/65d8553a-2f78-416c-bb3d-8c80f72aa1a2/sedemuf.pdf
    • https://s3.amazonaws.com/meludav/10787045305.pdf
    • https://s3.amazonaws.com/xakusineba/bafotuzuwavisokufo.pdf
    • https://s3.amazonaws.com/fizaxo/45074020452.pdf
    • https://uploads.strikinglycdn.com/files/813cbde4-b299-488e-ba09-2e9d54f17e0e/how_to_make_a_3d_heart_with_construction_paper.pdf
    • https://s3.amazonaws.com/legobegutulo/tufutif.pdf
    • https://s3.amazonaws.com/nonipesikiri/delupazo.pdf
    • https://s3.amazonaws.com/baposivarabuj/23592537174.pdf
    • https://uploads.strikinglycdn.com/files/6b9eeb13-295b-429e-a0fe-a9a0e7346443/shimano_di2_groupset_rim_brake.pdf
    • https://uploads.strikinglycdn.com/files/03e8c34f-dc80-4e5c-8bc2-34210b8bb47e/10813982650.pdf
    • https://uploads.strikinglycdn.com/files/80b16e09-b9ff-45a4-baf1-5a3652c2674d/5595725798.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f458.bin
81022643e1dd086560b8a1f2b4326c2805985b96ac79d1d9efd44992139f2fcb
pdf-font-stream PDF embedded font (sfnt) at offset 0xF458 4932 bytes
font_01_sfnt_off00010519.bin
295d33a0c34f050cf999d2050421ae6f90d6ea37d48d0066fff605354897afc2
pdf-font-stream PDF embedded font (sfnt) at offset 0x10519 11364 bytes
font_02_sfnt_off00012bd7.bin
b4303b7532046f56b62e2abca926eafadac68d6eab054522581967413dfeabf8
pdf-font-stream PDF embedded font (sfnt) at offset 0x12BD7 16556 bytes
font_03_sfnt_off00014254.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x14254 4324 bytes