Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea2a976e41cbf098…

MALICIOUS

PDF

45.1 KB Created: 2021-05-12 10:50:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9c1b40bbd1c0705c9e4d1925f7197e63 SHA-1: a16200a8cde9580fb08c97cd2cfbe0915cb2bb29 SHA-256: ea2a976e41cbf098ca6dea82d437d045b6867bd6fbe254e8374659e2cf2a9f04
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links to a known malicious redirector infrastructure, specifically promoting 'daily free spins' and 'game hacks'. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to direct the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/406889139/daily-free-spins-game-hack In PDF document text
    • http://repository.unla.ac.id/repository/www-robux-com_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/robux-miner_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b53.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B53 25312 bytes
SHA-256: a8d40fd9468651c9765f511641f6e0fa5309d954d68b601950a3dda28d099d4e
font_01_sfnt_off000084d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D6 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008ec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC0 18064 bytes
SHA-256: c13d24b09dacab53a31a9a34c8affe100c305689843df97e3c31ade46cbd1ed9

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