Malicious PDF — malware analysis report

Static analysis result for SHA-256 e528dc747acb8eae…

MALICIOUS

PDF

42.5 KB Created: 2021-05-13 23:31:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fa5838771751ac975efaef1cc0ab1809 SHA-1: 6936a217956f7b602d1a216cee7106956ab3664e SHA-256: e528dc747acb8eae90b6da45122e0f208cafc60a375804c99ebef5d55cc8648e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for a 'free generator / game hack' which links to known malicious redirector infrastructure. The document body and embedded links suggest a social engineering tactic to trick users into visiting potentially harmful websites. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9630

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/406889139/fb-coin-master-hack-game-hack In PDF document text
    • http://safwafurniture.com/images/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/2021-roblox_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://safwafurniture.com/images/rape-simulator_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/how-to-use-redstone_GM479516143.pdfIn PDF document text
    • http://safwafurniture.com/images/free-robux-please_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/coin-master-game_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/free-robux-cards_GM431946152.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
stream_003_off00004439.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4439 23896 bytes
SHA-256: f63a05db27918529601bfc2f3f1afe491ebb245c174da69c5205acccaf55e1e5
font_01_sfnt_off00007a43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A43 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000842d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x842D 18040 bytes
SHA-256: fbb613cf7ce1cb36a0a8d280c3838effdb84971329b91d5b96a8bc41d66c780c

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