Malicious PDF — malware analysis report

Static analysis result for SHA-256 162c995a52f87eae…

MALICIOUS

PDF

46.7 KB Created: 2021-06-07 03:11:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 54ac3baa005c4ce4cd89eab26223f14a SHA-1: ce3f7b9f947a2f2913be53a5a362978c53bf327d SHA-256: 162c995a52f87eae4edf30f1bfabe88732c99c207c883ebe607f1eb3d94ce86d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, disguised as 'free generator' or 'game hack' lures. The primary link identified is https://netcdn.tw/app/431946152/how-to-get-free-hats-on-roblox-without-inspect-element-game-hack. This indicates a social engineering tactic to trick users into visiting potentially harmful sites, likely for further malware delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/how-to-get-free-hats-on-roblox-without-inspect-element-game-hack In PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/roblox-hack-2021-free_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/roblox-elements-cheat-engine_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/roblox-free-fall-damage-reddit_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/roblox-follower-hack-2021_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/free-tiktok-app_GM835599320.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/hacks-on-jail-reak-roblox_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/roblox-id-code-for-cheats-code-for-hoes_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/roblox-survivor-script-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/free-robux-please_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/roblox-cheats-to-get-free-builders-club_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/how-to-get-minecraft-pocket-edition-for-free_GM479516143.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_off00005636.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5636 26360 bytes
SHA-256: 75e807b6f4df38435586230feb314fa9bb1f8733eea58cc5bb747a790d9abeb5
font_01_sfnt_off00009086.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9086 19504 bytes
SHA-256: 538f0b559006d8f11347b06ff2f026aecb958aa1e04c038294e19f022e520041

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