Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a816ce9d97500cd…

MALICIOUS

PDF

31.9 KB Created: 2021-07-09 23:46:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 8948d5b2c209d9b53f6e16a6bc1489ed SHA-1: a6e638a6956f9bd65bbbb3f9b38670c85a9df2dc SHA-256: 0a816ce9d97500cd3c76962c82af078c70c21500222eaa219b0407767df8994c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, which leads to a lure for free game hacks and currency. The presence of numerous links to similar scam-like content suggests a phishing or social engineering attempt to drive traffic to potentially harmful sites. No scripts were extracted, but the document's structure and embedded links strongly indicate a malicious redirection workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/835599320/tiktok-for-free-game-hack In PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/how-to-get-free-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/get-free-tiktok-followers-no-verification_GM835599320.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/claim-robux_GM431946152.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/how-to-get-bloxburg-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • http://elearningmi.mibustanululumtulungagung.com/__statics/gudangsoal/files/free-robux-app-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
font_00_sfnt_off00002c96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C96 21268 bytes
SHA-256: 0e4dcfda6e584007c1256958a62ea4b5221d68adbc681bf065c7abe44ea1b27e
font_01_sfnt_off00005b26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B26 17972 bytes
SHA-256: c2ea0ec047dda9dae57c7b6fccb39bb9de8bc1653c054defbe0bc43e3e19fae1