Malicious PDF — malware analysis report

Static analysis result for SHA-256 16e2db11c3d2f622…

MALICIOUS

PDF

45.7 KB Created: 2021-06-11 10:46:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: cf82dcf9b104d2cab855705f9a622356 SHA-1: b058cf1774fca1762297616bb63389a3db5af6b9 SHA-256: 16e2db11c3d2f622243781c2b1f8ebf95aa77d83ea9de583c06f23b4c79978f6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks and free in-game currency. The document body and extracted URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/roblox-i-hacked-place-rebuilder-game-hack In PDF document text
    • http://sv-nahetal.de/images/ww-roblox-come_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://sv-nahetal.de/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/roblox-money-hack-free-download_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/roblox-hcbb-hack_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://sv-nahetal.de/images/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/coin-master-daily-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/roblox-invisibility-script-hack_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/undetected-cheat-engine-roblox_GM431946152.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_off000053b7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53B7 25336 bytes
SHA-256: 388d5b4c19ed8eefa003032c1fba5e78853f65950c650e16bf6f5aaca8886a67
font_01_sfnt_off00008e8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E8B 18772 bytes
SHA-256: eb9e1dad3d0b7a2da3ea2ad3162d7db8aaf64d0bafe0c2171f061b345ae59def

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