Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2874a4d78deaf46…

MALICIOUS

PDF

45.3 KB Created: 2021-06-04 02:12:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d4f8ef6fb9407105c4e3fbfedd0d983a SHA-1: 1c35ddff6527b07253ceb720d286d42a9fc3e4d5 SHA-256: b2874a4d78deaf46fa02e07d54e476935322882e2f689ebcd6a9ecb9451edfdf
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links that redirect to malicious infrastructure, impersonating Microsoft to lure users into clicking. The primary lure is a 'free generator / game hack' for Roblox, leading to a suspicious URL. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect users to a credential harvesting or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.online/app/431946152/cute-free-roblox-outfits-game-hack.
  • 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.online/app/431946152/cute-free-roblox-outfits-game-hack In PDF document text
    • https://lib.unitri.ac.id/repository/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-free-tiktok_GM835599320.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-imagine_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/e-hack-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-hack-apk-android_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/robux-free-co_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-daily_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005166.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5166 26296 bytes
SHA-256: bcb29012c8fc97a6fc515405825e69fc617baa5af68da0c03a70f985e42ef79c
font_01_sfnt_off00008e95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E95 18312 bytes
SHA-256: 2199fd6d62bdff63a90b18f1783fe44650e4aecd573f3309c05a38fa35b4e6eb

Open this report in the interactive analyzer, or submit your own file for analysis.