Malicious PDF — malware analysis report

Static analysis result for SHA-256 081397112cdc5862…

MALICIOUS

PDF

33.9 KB Created: 2021-06-26 07:11:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d2d98601e405de136a0bf60487772594 SHA-1: 1f9744ad830998c7db0144604a10529d7f237d41 SHA-256: 081397112cdc586207045a4a9248054fe2a7563ee594c6bf1668c6cc132faeaf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary link pointing to a known malicious redirector infrastructure. The document body and heuristics indicate a lure for 'game hacks' or 'free generators', suggesting a social engineering tactic to trick users into downloading or visiting malicious sites. No scripts were extracted, but the presence of malicious redirectors and the lure strongly suggest a phishing or malware distribution attempt.

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/youtube-robux-pastebin-hack-game-hack In PDF document text
    • https://library.iuli.ac.id/repository/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-2021-unpatched_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-deathrun-cheats-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-make-stuff-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-hack-money-in-heists-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-promo-codes-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-free-coins-in-assassin-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/hack-2021-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-murdere-mystery-2-candy-hack_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-accounts-of-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-rc7-hack-download_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-tons-of-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/hacking-classes-for-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00002d88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D88 22168 bytes
SHA-256: a2e21a42f3910889908f34d9b1f447c70b659c47316515840bd467f7e8a908fd
font_01_sfnt_off00005eb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB8 19264 bytes
SHA-256: 9b1cbd3b7437a11ac6edd368599266866540ff145b7940b18c7825749f9c2304

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