Malicious PDF — malware analysis report

Static analysis result for SHA-256 5788bd60b7e8d7cf…

MALICIOUS

PDF

48.5 KB Created: 2021-06-07 13:44:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e95feec13b35e429ac88aab07f244fd8 SHA-1: 715728ccea48c0fed2bbc639bcb80fd9503ab654 SHA-256: 5788bd60b7e8d7cf4171bfbf014fb28f6d202e0d6c25e32a197952ec152f2c6b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as offers for free game currency or hacks. The document body and heuristics indicate a lure to a 'free generator' or 'game hack' website. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or redirection attack designed to lead users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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.tw/app/431946152/how-to-get-free-robux-2021-without-contacting-game-hack In PDF document text
    • http://aspiesretreat.org/images/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/robloxhacks_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://aspiesretreat.org/images/roblox-robux_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://aspiesretreat.org/images/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • http://aspiesretreat.org/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/coin-master-hack-apk-online_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/tiktok-free-up-space_GM835599320.pdfIn PDF document text
    • http://aspiesretreat.org/images/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://aspiesretreat.org/images/coin-master-free-coins-link-2021_GM406889139.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_004_off000053e0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53E0 29416 bytes
SHA-256: d2e153f95d853b6663ce811fdafa8afc43f60bca75a87d1ed8d1b9bd3e4cf4a4
font_01_sfnt_off000096fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96FB 19684 bytes
SHA-256: 69e1d264babf83d878c050de1ebdef26a6cc6d09d36577d2e8f6a8795db95d82

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