Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3ae0ac60879c6ae…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 22:22:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d64a8a9ea44c675d1510df1e5e2eccfe SHA-1: 40c551c711be1f04558b447bba482336ec24a418 SHA-256: a3ae0ac60879c6aeaeca7e89599901e2744e13c67235c52cfca6bf2cf4441032
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains embedded links that redirect to a malicious domain, masquerading as a 'free generator / game hack' for popular games like Roblox and GTA 5. It also impersonates Facebook to lure users into clicking the link, likely for credential phishing. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.tw/app/431946152/how-to-hack-roblox-gta-5-game-hack.
  • 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/431946152/how-to-hack-roblox-gta-5-game-hack In PDF document text
    • https://lib.stie-yai.ac.id/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-apk-mod-unlimited-robux-free-download_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-robux-stealer-hack_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/pokemon-go-free-spoofing_GM1094591345.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-audios-roblox_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/tiroblox-cheats-for-robux-and-tix-robloxcheatsnet_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-recieve-instantly-no-survey_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-hacker-greg_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3079 21812 bytes
SHA-256: 338ad429c56e0616a955af30202e037a5c7e0e46c43bf8f1d391f2d29a9637bc
font_01_sfnt_off00006082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6082 18872 bytes
SHA-256: 534ba12053a6fb490eac14982aace1a02c6f3354d3df62b6fa79892fb1052ceb

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