Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba8caaf60ac66560…

MALICIOUS

PDF

42.5 KB Created: 2021-05-15 16:01:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 562bf4d2a742f83ba812dd730cc59e07 SHA-1: 150235a0c169eb31c802450ff2cd7015b18c0661 SHA-256: ba8caaf60ac66560b36b0c2b08a1439b62716dd46d71c2376a3c44706267a565
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and generators. The document body and embedded links suggest a lure to trick users into visiting these sites, likely to download further malware or engage in phishing. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/how-to-play-minecraft-for-free-on-pc-game-hack In PDF document text
    • http://selectionspdf.fr/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/rbx-free_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/minecraft-handbook_GM479516143.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.freenom.comHeyIn 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_off00004950.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4950 25636 bytes
SHA-256: 4a4422570c68dcd5baeeadc587e42a22759b03a630bf7dda0ffad973f89a441a
font_01_sfnt_off000083d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D5 18284 bytes
SHA-256: 805db6617afe2d237489c8bb7c2b5cc2832d34670fdae12a8b82fd0acde92e0c

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