Malicious PDF — malware analysis report

Static analysis result for SHA-256 42a017c0de62b352…

MALICIOUS

PDF

42.1 KB Created: 2021-05-15 22:59:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 477c129f264595ae2e0f69977233e073 SHA-1: f480d8f55438fca2c929ae4c8c85334e6e03a83f SHA-256: 42a017c0de62b3528bafd4d006f7c563ec0cb12c78c9d82a23d0f9967451c7ba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to known malicious infrastructure, specifically targeting users interested in game hacks and free currency. The document body and heuristics indicate a lure for 'free generator / game hack' content. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or redirection attempt to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/roblox-how-to-get-free-clothes-game-hack In PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/strucid-aimbot_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/how-to-get-free-robux-codes-2021_GM431946152.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_003_off000049a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49A3 24480 bytes
SHA-256: abb902bc74f65079c6657c3ba2d7cd10ce39b8d92bb5b8959523a388970440d7
font_01_sfnt_off000081d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D7 18384 bytes
SHA-256: 8aca1d07216195df25fd495dd4080fa876c90bf71ef268fe254f88f451b51367

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