Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dd252b8d2688b2b…

MALICIOUS

PDF

44.4 KB Created: 2021-05-11 17:58:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 03403b5343128f9c4b3811aa753cdda7 SHA-1: 1767bb1f85dd762cd80e044fd48ecd9a73ea02fb SHA-256: 0dd252b8d2688b2b249a5f6f36e016b61f6c56389ec08f88021e5feafb493ee3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to known malicious redirectors, specifically advertising "free generators" or "game hacks" for popular games. The primary lure URL is https://netcdn.xyz/app/431946152/rbx-robux-game-hack, which is flagged as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/431946152/rbx-robux-game-hack In PDF document text
    • https://itv-grabungen.de/images/coin-master-free-gift-links-2021_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-robux-download_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-tiradas-gratis-2021_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-robux-com_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/freerobux-hack-us_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-game-free_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/freespins-coin-master_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-robux-2021-no-human-verification_GM431946152.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_off0000475b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x475B 30900 bytes
SHA-256: 020c0558a826baf652038a700445c7553ee17fb4bc61873bc34ceb6199f5ba4d
font_01_sfnt_off00008cd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD3 17852 bytes
SHA-256: db335316de1c827679f476dd5ee7b92397be9666285fe33d80a402a572565b32

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