Malicious PDF — malware analysis report

Static analysis result for SHA-256 d107d7e2d890750f…

MALICIOUS

PDF

45.1 KB Created: 2021-06-09 11:52:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 19dd601ca4b5216f924d5fa1cdaf4b4a SHA-1: 1543d0703beb53b34e942d8fcb91042137d1ee7b SHA-256: d107d7e2d890750f7540ccd073fb9951c522dc208861bbaa64d9c59e24e21980
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The document body and heuristics indicate a lure to download potentially unwanted or malicious content. No scripts were extracted, but the presence of malicious redirectors and the lure suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/kranberry-roblox-hack-download-game-hack In PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-draw-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-look-cool-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-in-app-purchases_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/download-hacked-games-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/toolbox-for-minecraft-pe-ios_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-free-robux-obby-limited-time-only_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-link-app_GM406889139.pdfIn 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_off0000515a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x515A 25704 bytes
SHA-256: 13c465ed1f8dfa7585a690776e1e159b127f012d1a8a4c3b8386eb1a2bb14a09
font_01_sfnt_off00008b90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B90 18868 bytes
SHA-256: 0246e1522adf6ad2707cf1057c32d55a83f904d52a2283dd20136218327a4ba6

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