Malicious PDF — malware analysis report

Static analysis result for SHA-256 78db8a2ba60c83f2…

MALICIOUS

PDF

46.3 KB Created: 2021-05-14 16:05:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 309b553b20509aa67d152c65c1aa2ef6 SHA-1: ee8841418c5aa772332bac4a865adf66ab95512e SHA-256: 78db8a2ba60c83f22817649678ed4410a5352c2c0c13fb243da24f3a926dae64
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to websites offering 'free Robux' or game hacks, a common lure for phishing or malware delivery. The heuristic firings confirm these links point to malicious redirector infrastructure. While no scripts were extracted, the PDF structure itself facilitates these malicious redirects, suggesting an intent to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8252

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-land-free-robux-game-hack In PDF document text
    • https://marcopolosydney.com.au/images/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/give-me-robux_GM431946152.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/free-roblox-acc_GM431946152.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/robux-xyz_GM431946152.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/free-roblox-injector_GM431946152.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/free-robux-co_GM431946152.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/haktuts-coin-master-free-spins_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
font_00_sfnt_off0000492f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x492F 26800 bytes
SHA-256: edd84021f27691397499f1ef219f3b65cba539c640288009f3f7ae2c455f0b8a
font_01_sfnt_off000085a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85A1 2892 bytes
SHA-256: c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4
font_02_sfnt_off00008f8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F8B 19172 bytes
SHA-256: 91cb80a28a327fe8af136c55221770a0a3ef8d0e219407cd799994e23c35a2d4

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