Malicious PDF — malware analysis report

Static analysis result for SHA-256 241f10642b71a41d…

MALICIOUS

PDF

50.7 KB Created: 2021-06-11 00:42:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 890f2430c599ac4a53cb95266f54d4a3 SHA-1: 5f768458b68d6938aa81b6bf4c1b5a3a15d68d66 SHA-256: 241f10642b71a41dffd7abca3268cdf912e16093315a65ef3302c618801a3363
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks. The embedded content, though obfuscated, suggests a malicious workflow involving redirection to external sites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9681

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/infiite-jump-hack-for-roblox-game-hack In PDF document text
    • http://atrax.hr/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://www.atrax.hr/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/roblox-moderators_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/hacker-web-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://www.atrax.hr/files/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://atrax.hr/files/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://atrax.hr/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/free-roblox-printables_GM431946152.pdfIn PDF document text
    • https://www.atrax.hr/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://atrax.hr/files/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://atrax.hr/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/coin-master-free-download-pc_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F93 24400 bytes
SHA-256: 88f853ed56d735eee0e445cb70137d9a87f844aa28183cebc368f22a42c84409
font_01_sfnt_off000086cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86CF 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9371 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_03_sfnt_off0000a019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA019 19312 bytes
SHA-256: 112648af436c14b5173264a6fa23885f6f936ba560eb417804aab311e385635f

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