Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bf2e169e8890331…

MALICIOUS

PDF

47.1 KB Created: 2021-05-15 10:07:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6688b4e45b6fb4aa9f4f8b55b7b5f713 SHA-1: f4cecda1c6a2d09775cd4cf7d19593350b9d40c8 SHA-256: 3bf2e169e88903319adb754359760e5d2782fbde9842d2d43778080b42650586
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting a 'free generator / game hack'. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to lure users to potentially harmful sites. Although no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/479516143/wurst-commands-game-hack In PDF document text
    • https://masseymotorcars.com/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://masseymotorcars.com/images/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/coin-master-free_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://masseymotorcars.com/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://masseymotorcars.com/images/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • https://masseymotorcars.com/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://masseymotorcars.com/images/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • https://masseymotorcars.com/images/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://masseymotorcars.com/images/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://masseymotorcars.com/images/e-free-roblox_GM431946152.pdfIn PDF document text
    • https://masseymotorcars.com/images/get-more-robux_GM431946152.pdfIn PDF document text
    • https://masseymotorcars.com/images/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/how-to-hack-a-minecraft-server_GM479516143.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_off00004c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C93 28136 bytes
SHA-256: 45adfcc2591169e8c354e75cdc493b545648944837155bc8e30c5c6f0acb5911
font_01_sfnt_off00008bbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BBB 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off0000956c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x956C 18360 bytes
SHA-256: 82af6130b976e7e3d57b752dfdf53cbe312851006f14cbe873ba02022738eb83