Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aa56fbc3ae732f3…

MALICIOUS

PDF

45.4 KB Created: 2021-06-10 23:54:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1a8744fa147776681ce03161187b6fcb SHA-1: f09ff829295001603da77fbecf7b124f5ea98d53 SHA-256: 1aa56fbc3ae732f37e666a67875e56970f6d3fec0868503836b8f46eea673f4f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as generators for popular games. The document body, though partially corrupted, suggests a lure related to 'free Roblox picture' and 'game hack'. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

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-roblox-picture-that-makes-a-t-shirt-look-cool-game-hack In PDF document text
    • http://elektrofahrspass.de/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/roblox-plus-ultra-stat-hack_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/pokemon-go-free-and-home_GM1094591345.pdfIn PDF document text
    • http://elektrofahrspass.de/images/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-robux-games-that-actually-work-2021_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
stream_004_off00005367.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5367 24640 bytes
SHA-256: 795ed1c52af281652c622140a1329ddefa01da33b9b1e6fe699112b0964f4b39
font_01_sfnt_off00008c47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C47 19260 bytes
SHA-256: 11e25c0e432a9d20563a7c5018ba10336786ceb84915f101d4203eec1d43d2c0

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