Malicious PDF — malware analysis report

Static analysis result for SHA-256 b742879aa9901e95…

MALICIOUS

PDF

42.4 KB Created: 2021-05-11 02:02:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: af4d3c15647069f379de2c0bf5d8d700 SHA-1: b97167d31e057c78daeaf999222794b54fd1ec75 SHA-256: b742879aa9901e95526ede6a025395c1beddba532c9616971a39c6e17c977456
180 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a game hack lure, linking to known malicious redirector infrastructure. The document body, though partially garbled, contains text related to 'No Human Verification Hack For Coin Master' and a URL that aligns with the heuristic findings. The presence of embedded URLs and the nature of the lure suggest an attempt to redirect the user to a malicious site, likely for further exploitation or malware delivery.

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) or Microsoft license-boilerplate 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/406889139/no-human-verification-hack-for-coin-master-game-hack In PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/coin-master-download_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/real-robux-generator_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/robux-prices_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/coin-master-free-food-for-pet_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bd5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BD5 24332 bytes
SHA-256: 57df5091af8cba01805dc98be8086b9c61715771c26abb2b3caefbfe42c233fe
font_01_sfnt_off00008334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8334 18416 bytes
SHA-256: e2def261e9c0d489920ca96f0bc353b112c40b7f6e818ee8e160ca61827c750c

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