Malicious PDF — malware analysis report

Static analysis result for SHA-256 297773610e6769ff…

MALICIOUS

PDF

46.1 KB Created: 2021-06-08 15:12:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 58aa5d0ea16487eef1b6731081d4e3cb SHA-1: 160f74f8edf600453269df3033b9ac2510e99577 SHA-256: 297773610e6769ff869ef3dd1e87e46cf50da3b5bbf28c79d30014e838b189b0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The heuristic firings indicate that these links are part of a known malicious redirector chain. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at driving traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/free-best-roblox-exploits-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/free-shavaka-roblox-id_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-hair-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-hacking-class_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-spins-on-coin-master-game_GM406889139.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_004_off00004ee5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EE5 29736 bytes
SHA-256: d642f5889ca4cdfac27b3ccf9adf0ce0f7714c998353ef872cf26805e48224a4
font_01_sfnt_off000091b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91B6 18348 bytes
SHA-256: d1785255c76b0603d0f690ab4dc2badfb7081e39680787dd9bf0e1d1b01400b5

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