Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a7d30dc2f30ac1…

MALICIOUS

PDF

42.8 KB Created: 2021-05-19 21:45:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a9ac0f75076b5c0f57edb996ef11a4a6 SHA-1: a49578f9429700be85a60ce1aa731e44d61e6cc9 SHA-256: 89a7d30dc2f30ac1387d27447d2d4561a753156fe9b414b9b28b692419e420ea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators. The document body and extracted URLs indicate a lure for free game items or accounts, which is a common social engineering tactic. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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/1094591345/pokemon-go-free-trade-evolve-game-hack In PDF document text
    • http://repository.unla.ac.id/repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-roblox-script-executor_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/minecraft_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-roblox-characters_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-coins-twitter_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-free-roblox_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_off00004b59.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B59 24760 bytes
SHA-256: 46f72331dad6028b845682f6597d24e20bc647009e1f979f6bac8301af403559
font_01_sfnt_off00008497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8497 18432 bytes
SHA-256: 64c9f2265b3f57433b49149ea6d754cfa515040c37cab1c884ccdadbfbc872b8

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