Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7babc757d6bb739…

MALICIOUS

PDF

44.2 KB Created: 2021-06-03 08:50:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e5217e63f642acd01ac0c438e6bf9c13 SHA-1: bc9e015015ec69f6186e6a3007c120b925b0ce0e SHA-256: b7babc757d6bb739d3018c1b64d6086b0d6b3168c46993370c2147699b501b46
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to websites offering game hacks and generators, a common lure for malicious downloads or phishing. The ML classifier strongly flagged this PDF as malicious, and the presence of external URI links further supports a malicious intent to redirect the user to potentially harmful content. No scripts were extracted, but the document's structure and linked content indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/479516143/minecraft-iphone-free-game-hack PDF link annotation
    • http://perpustakaan.bkkbnkaltim.id/repository/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/coin-master-apk-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/rbx-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/kachifpro_GM406889139.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/coin-master-free-spins-link-2021-april_GM406889139.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.bkkbnkaltim.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.freenom.comHeyIn 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
stream_004_off00005238.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5238 24764 bytes
SHA-256: 393c5c09590947a2da9fec94f62da64f83a724097d0744dd3fff46c5b55e3394
font_01_sfnt_off00008b21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B21 18052 bytes
SHA-256: d64526d0e07d457868d5eac688c0bc3e5c9817b8b07646f1be3e20c76e1ff486

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