Malicious PDF — malware analysis report

Static analysis result for SHA-256 f64264bf4d690270…

MALICIOUS

PDF

34.0 KB Created: 2021-06-28 00:17:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e47a1ca5194dc35b45357927dd9bf3e7 SHA-1: afaf30827157ad9ddf60f0c76c70c11da585e97f SHA-256: f64264bf4d690270ba32c1913abe6a2b0b15145de335c344bea9cebfc2444aa6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a malicious redirector, likely intended to deliver a second-stage payload. The document body explicitly mentions 'free Robux' and 'game hack', aligning with the heuristic findings of a game hack redirect lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a common pattern of using document exploits or social engineering to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/how-to-get-free-robux-no-hack-no-pastebin-game-hack In PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/hack-robux_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/hack-my-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-get-free-robux-no-human-verification-or-offers_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-100-robux_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-get-robux-for-free-instantly_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-mojang-account-with-minecraft_GM479516143.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
font_00_sfnt_off00002dfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DFC 22004 bytes
SHA-256: 1905a6fd97723ea992de512539bc1a90e14c7af2b8d93b2a11379b9794195ca9
font_01_sfnt_off00005e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E85 19428 bytes
SHA-256: ee5721359717b264ddfd60640ff0e5bb1b37e95700987ad805feaecdaeb51bf1

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