Malicious PDF — malware analysis report

Static analysis result for SHA-256 1be60142e09d60ca…

MALICIOUS

PDF

40.9 KB Created: 2021-05-17 19:37:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: a0ddb69faef1d1736025c8b0ab926260 SHA-1: ff4bde9e6ce02e1acda63a2ee96f69e2c726943b SHA-256: 1be60142e09d60cab4c63cfe4711754012c57f15cf1464455a0cfde29c72fe7d
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that impersonate Facebook and promise "game hacks" or "free generators", leading to malicious redirectors. The document body text and heuristics strongly indicate a credential phishing or scam lure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it is designed to redirect users to malicious sites, potentially for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/406889139/hackear-juego-coin-master-game-hack.
  • 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/hackear-juego-coin-master-game-hack In PDF document text
    • http://educhina.mn/editor/files/hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-roblox-followers_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-games-to-play-for-free_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/scaffold-minecraft-hack_GM479516143.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_off00004742.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4742 24020 bytes
SHA-256: a6849cff2523daf6c26a38f7dafefcd7cdc3ccc9aabca581fd15c9f7f082056c
font_01_sfnt_off00007d39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D39 18308 bytes
SHA-256: 85adf4a15c24233f1c93bca6a3c18238941d111dac195f6ddf82d6394f744ad0

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