Malicious PDF — malware analysis report

Static analysis result for SHA-256 12b35fb2d8affefe…

MALICIOUS

PDF

35.3 KB Created: 2021-06-28 08:41:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b2cbfb0f9616905b55eccc7c4cbf82bd SHA-1: 78cd0eb9300fcc4f80b4bcda77fbe376fdbf4ffb SHA-256: 12b35fb2d8affefe0611b445b0f81e972df0e6b7c9bc7332454a1dda41714131
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to known malicious redirector infrastructure, specifically promoting game hacks and generators. The document body and heuristics indicate a lure to download or access potentially harmful content. While no scripts were explicitly extracted, the nature of the links suggests a phishing or social engineering attack aimed at tricking users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/roblox-for-cheat-engine-game-hack In PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/coin-master-game-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/roblox-jump-hack-bit-slicer_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/pubg-uc-dealer_GM1330123889.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/cone-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/best-way-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/coin-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/free-roblox-clothes-names_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/how-to-be-sans-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/free-roblox-toy-codes_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4kotajambi.sch.id/__statics/gudangsoal/files/what-games-on-roblox-give-you-free-robux_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_002_off000031ef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31EF 22840 bytes
SHA-256: 4586b9881ed631be74fd4c632fad78d92f90c08b65995ab4c0c458a75c4dd51d
font_01_sfnt_off0000651b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x651B 19040 bytes
SHA-256: 787b2632f43f04b19bb7960e432fdfe487f5ec63fe1e7e21826ea0d9669733a6

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