Malicious PDF — malware analysis report

Static analysis result for SHA-256 deff21bc5c4deffd…

MALICIOUS

PDF

42.7 KB Created: 2021-05-19 00:36:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: a0689af3ffc500df57ec38ae3e4095fd SHA-1: eb20459e9d13b780f32684a5d0e4da0bd838a288 SHA-256: deff21bc5c4deffda8b99e2eebd8b40c0c0108cfa96b13952252f7fb667abfe7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary lure URL is https://netcdn.xyz/app/479516143/free-minecraft-mods-for-ps4-game-hack, which is flagged as a known malicious redirector. The document body and numerous other URLs suggest a phishing or scam attempt related to popular games.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-minecraft-mods-for-ps4-game-hack In PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-mod_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/roblox-games-to-play-for-free_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-pet-food-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/roblox-studio-free-robux_GM431946152.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_003_off00004b9a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B9A 25492 bytes
SHA-256: d6381f30ae46bc6a576b5f866862b18a0248a12b7f1b87fb2f86c17f00c65d17
font_01_sfnt_off00008548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8548 18100 bytes
SHA-256: afa4c211481c2918fc981f85699f534e91f71a3c97d40d186225a72223318956

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