Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0cf3eb986c7b012…

MALICIOUS

PDF

38.6 KB Created: 2021-06-18 08:25:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 5d2ed32d63f2c538f33db1cf11ea2f4b SHA-1: 6c318439e989639eb8fc9c1fe6fb7770faa7506b SHA-256: e0cf3eb986c7b012c049a4adf7e8a3720e519f62eb635e3bfa9fa1a9b49b8b6d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The ML classifier strongly indicated maliciousness, and the presence of numerous redirector links reinforces this assessment. The document's content and linked URLs suggest a phishing or scam attempt to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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/free-robux-no-human-verification-android-2021-game-hack In PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-free-old-accounts_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/2021-how-to-make-a-free-group-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/download-coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/inappropriate-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/tiktok-likes-free-2021_GM835599320.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003cee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CEE 22720 bytes
SHA-256: bdb55524ce0033e3ed963c9945e09249fefb0725076f3d357a45e34b8b0fdca0
font_01_sfnt_off00006fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA9 19912 bytes
SHA-256: e65ccc8702d65c786f6d9bd0c9f2bba2886ef9180d25b16bb9d0626f212150bb

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