Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae84c1316711abbe…

MALICIOUS

PDF

45.8 KB Created: 2021-05-17 21:09:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 09fdbd3eee5746d59f51837ea8bae3e2 SHA-1: f6861f34f0c073c8543f6319c1cab16adf68c9b6 SHA-256: ae84c1316711abbe0a36bc6933a72de35c994365e5a877e418f22be6739ef58b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, specifically promoting 'free generator / game hack' lures for popular games like Coin Master and Robux. The document body and embedded URLs strongly suggest a phishing or malware distribution scheme, likely initiated via spearphishing attachment. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/coin-master-coins-free-game-hack In PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/coin-master-hack-tool-for-pc_GM406889139.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/how-to-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/coin-master-hack-ios-2021_GM406889139.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_off00004c42.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C42 25856 bytes
SHA-256: 73d6ce0054b846ea6826492f963216853f81a5ca6774854265256c34584da339
font_01_sfnt_off00008704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8704 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off0000922d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x922D 17712 bytes
SHA-256: 0afd6f2792edb83b7f2a0201a1e0a5eb12ca81ad868fb3e42742340ee6e5fb0e

Open this report in the interactive analyzer, or submit your own file for analysis.