Malicious PDF — malware analysis report

Static analysis result for SHA-256 daff0f03b244e1fe…

MALICIOUS

PDF

34.9 KB Created: 2021-07-09 16:04:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 59efc71ab015741c59d6c21c6bc18211 SHA-1: 70d329e3126b98424f9dc9a30bd29fd85f99d548 SHA-256: daff0f03b244e1fe4858c479c0b4d635a67ce40d9a942caa1c90b459c119a2a7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to a known malicious redirector, masquerading as a 'game hack' or 'free generator' lure. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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 http://netcdn.tw/app/406889139/coin-master-coins-game-hack In PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/robux-offer-wall_GM431946152.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-august-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/coin-master-free-in-app-purchases_GM406889139.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/hack-para-roblox-apocalypse-rising-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/make-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-march_GM406889139.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021-no-download_GM431946152.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/descargar-roblox-hackeado-con-robux-infinitos-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • https://learning.mtsn8majalengka.sch.id/__statics/gudangsoal/files/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003430.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3430 22780 bytes
SHA-256: 0d38c9a46448cc5ef9bbe777681a1a9074ca2a5d835e0af06d5b06d9617df141
font_01_sfnt_off00006724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6724 17836 bytes
SHA-256: 84574f8323a35f53ec0be3b5c2b4531289117d356e64a8613214cbf4efbbad2d

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