Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f6d0282590276e8…

MALICIOUS

PDF

48.0 KB Created: 2021-06-04 02:01:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 3dd5d49730e94d1314f186b114271d83 SHA-1: 36afc82e121d5c78e6fb2cf66222bb205da26452 SHA-256: 0f6d0282590276e8266c71ae9568c0d5b95f08d105f70e68bc05ed263345ae13
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to known malicious redirectors, disguised as 'free generators' or 'game hacks'. The document body and heuristics indicate a lure for users to click these links, which likely lead to phishing pages or further malware downloads. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/free-robux-no-human-verify-game-hack In PDF document text
    • http://slims.abulyatama.ac.id//repository/robuxfree-con_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/earn-robux-com_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/tiktok-free-or-not_GM835599320.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-game-2021-free-spin-link_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-pubg-uc-hack-2021_GM1330123889.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-spin-and-coin_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_004_off00005054.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5054 26572 bytes
SHA-256: 199fb69929221984456b6c08e5ace92b3759138c965b65b0585260fb5a084c99
font_01_sfnt_off00008d62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D62 2812 bytes
SHA-256: 869414959d7b492e0f799b560e1731e3ab498bd286c28e9f0d2ec33d9b6cf53d
font_02_sfnt_off00009700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9700 18936 bytes
SHA-256: 1a7af96eb5386f0345b1dbf35dc45129c86900916c4bfc8bfbf0065f0a01c751

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