Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cafe06974e2ca2f…

MALICIOUS

PDF

42.7 KB Created: 2021-05-17 18:07:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 2fac1fcb395e12d89f4ae4313e86621b SHA-1: e48380a9849a2551988ba663ef923da6d6c12656 SHA-256: 5cafe06974e2ca2f350e6c0c2eb10e2031caac83be2814bf7a870e5c7a191a49
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, specifically advertising 'free generators' and 'game hacks' for popular games like Roblox and Coin Master. The ML classifier strongly indicated maliciousness, and the embedded URLs are associated with known malicious infrastructure. The document's purpose is to lure users into clicking these links, likely leading to further malware downloads or phishing attempts.

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/431946152/robux-websites-that-work-game-hack In PDF document text
    • http://nalmpantistractors.gr/images/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/free-roblox-adopt-me-pets_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/legit-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/coin-master-free-spins-link-deutsch-ios_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_off0000484b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x484B 25520 bytes
SHA-256: 0c49acbc48df896e298a0b08313f8bea46cd781839d2c6257a9c0afff66f76eb
font_01_sfnt_off000082f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F2 18836 bytes
SHA-256: f41676629f29ed6a42ccacba259d9acdb79474bce0625b7b45fdd4d276e33c05

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