Malicious PDF — malware analysis report

Static analysis result for SHA-256 19e0567e1d5e8f8f…

MALICIOUS

PDF

46.4 KB Created: 2021-05-17 16:10:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bf91dcbaa3d9867faa6fcef03386cd3b SHA-1: c654224debe040601ab1b90e923288c5ec6b8395 SHA-256: 19e0567e1d5e8f8f8c47c7691d36beb572a186a325b928729936a17ee3b47c1b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a download for game-related benefits, which is a common social engineering tactic. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple embedded URLs, including one pointing to a suspicious domain, supports this assessment. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/free-spins-on-coin-master-link-game-hack In PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-group_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/how-to-free-robux_GM431946152.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_off00004e7b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E7B 25064 bytes
SHA-256: c5b008153b2d23d77ea8ba447e56bf46694e86a3831617359cd7c2bb49c4d719
font_01_sfnt_off0000886c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x886C 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00009395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9395 18056 bytes
SHA-256: 892ebf3b86ae534fd3f474e2c239da2a9bb4dc91f8225dc09222a78aadec1336