Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aa56ae608cb2489…

MALICIOUS

PDF

43.0 KB Created: 2021-05-13 23:35:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 08e0669322c309a9df05e192c157a167 SHA-1: e8ec30758099584ea2ff9a72ac43d19e744175bd SHA-256: 3aa56ae608cb2489eb6155f127efadbdcc0cea4d4accedf66b3c96a927ee3ed2
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically targeting users with lures related to game hacks and free currency. The heuristic firings indicate a malicious redirector and a lure for game hacks, suggesting the primary goal is to drive traffic to potentially harmful sites. While no scripts were extracted, the document's structure and embedded links strongly suggest a phishing or scam attempt.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/431946152/lazyblox-com-free-robux-game-hack In PDF document text
    • https://dirigentigiustizia.it/images/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/minecraft-free-online_GM479516143.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-hack-a-minecraft-account_GM479516143.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/rewardex-robux_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-400-spins-coins-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/hack-crack-for-coin-master-currency_GM406889139.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_off0000494f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x494F 25564 bytes
SHA-256: 8a10e807e3f7a76963394309f48627f1281eb77ff9b10f41dcdb63eb51bc2175
font_01_sfnt_off000083ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83EF 18840 bytes
SHA-256: c7a12f46af2ab2e47f5138dce66a585f9a7928693d977e55c66cac0a0236f754

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