Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a2464f781a1ad8e…

MALICIOUS

PDF

32.7 KB Created: 2021-06-28 12:13:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3005c7fb999f8216f11a7c55af3d80fc SHA-1: 77c117ca04a6f89cde496ab2ab3e6a07b61943bb SHA-256: 5a2464f781a1ad8e3335b278919d542aa5dc0b73a45c2d9d1183e0ee0dbc0046
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/how-to-hack-dorm-life-on-roblox-game-hack. The document body and heuristics indicate a lure for game hacks or generators, suggesting the intent is to redirect users to potentially malicious websites. No scripts were extracted, but the embedded URLs and redirector findings are strong indicators of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-hack-dorm-life-on-roblox-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/all-the-free-clothes-in-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/john-doe-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/quick-robux-hacks_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-hack-mod-apk-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-one-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-card-hack-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-cheat-codes-for-gear_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hacks-para-mad-city-roblox-rock-split_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-robux-for-free-2021-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-generatorf_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
font_00_sfnt_off0000293a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x293A 21960 bytes
SHA-256: 7769df1f7c15ba6442fd49659d54d10215d6b51b81317e6d84240ee04fd205c3
font_01_sfnt_off000059f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59F7 19368 bytes
SHA-256: 21e764a00ba9574592072d045f8e2e291dd6a3028663e1f970c1077131a6740a

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