Malicious PDF — malware analysis report

Static analysis result for SHA-256 42f45669c57ca7f8…

MALICIOUS

PDF

41.4 KB Created: 2021-06-13 23:16:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 80d275efec9f4198d5fc0a824996e46c SHA-1: d36a2fb2182c02d81d10d77a884581969466992c SHA-256: 42f45669c57ca7f83608d193ccdce86be2eba9ce528dcc7a00c1ac4b12f4c290
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free game hacks' and 'robux generators'. The ML classifier strongly indicated maliciousness, and the presence of a download button lure reinforces the deceptive nature of the document. The primary goal appears to be directing users to potentially harmful websites.

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 http://netcdn.co/app/431946152/sonic-shirt-roblox-free-game-hack In PDF document text
    • http://pythonbikers.de/images/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://pythonbikers.de/images/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://pythonbikers.de/images/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://pythonbikers.de/images/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://pythonbikers.de/images/check-cashed-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/hack-gen-roblox_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://pythonbikers.de/images/add-robux_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/is-minecraft-free_GM479516143.pdfIn PDF document text
    • http://pythonbikers.de/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/rewards-roblox-com_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/roblox-my-hero-academia-online-hack_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • http://pythonbikers.de/images/roblox-cheat-menu-download_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_off000048c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C8 24064 bytes
SHA-256: 02a87cc4445214ef9e426de5c524ae203ac50c559fe5a1354e568ca9305904aa
font_01_sfnt_off00007f47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F47 18340 bytes
SHA-256: 42baed03a0510f56a106b697ad26e47222a6e9fe2f66219ad5ddc17a51541f04

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