Malicious PDF — malware analysis report

Static analysis result for SHA-256 29697b2254b116ca…

MALICIOUS

PDF

43.2 KB Created: 2021-05-15 03:15:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: faa3db4219aacbd7fba0e1f708d707a9 SHA-1: a986d816e690533ef5bdd3f368d11974c622b2b8 SHA-256: 29697b2254b116cacf28c8a425daad5b2461912d81a11a78c1af0965f42850d3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and external resources, disguised as 'free generator / game hack' lures. The primary malicious link identified is https://netcdn.xyz/app/431946152/free-100-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a common pattern of using such documents to redirect users to malicious websites, potentially for phishing or to download further malware. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/free-100-robux-game-hack In PDF document text
    • http://biotronicscyprus.com/images/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://biotronicscyprus.com/images/minecraft-116-1-download_GM479516143.pdfIn PDF document text
    • http://biotronicscyprus.com/images/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://biotronicscyprus.com/images/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://biotronicscyprus.com/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://biotronicscyprus.com/images/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://biotronicscyprus.com/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://biotronicscyprus.com/images/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://biotronicscyprus.com/images/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • http://biotronicscyprus.com/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://biotronicscyprus.com/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://biotronicscyprus.com/images/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://biotronicscyprus.com/images/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://biotronicscyprus.com/images/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://biotronicscyprus.com/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://biotronicscyprus.com/images/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://biotronicscyprus.com/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://biotronicscyprus.com/images/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://biotronicscyprus.com/images/minecraft-menu_GM479516143.pdfIn PDF document text
    • http://biotronicscyprus.com/images/minecraft-life-hacks_GM479516143.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_off0000494f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x494F 26732 bytes
SHA-256: 8d5b1e1c877a1fa44a4c5dd2f26df133f574814247b41c541d99b70f82ec2b66
font_01_sfnt_off00008678.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8678 18292 bytes
SHA-256: ade71c57547996cc2793a44f7be3e933a3a5664d4c8f362da863e6c031d51f12

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