Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c1c38148ac596f4…

MALICIOUS

PDF

33.2 KB Created: 2021-07-03 19:30:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f7c24b08134a97a5977504a0ee146c96 SHA-1: ba75a03f318fdfaddc49808e873b66cb8c25f8ea SHA-256: 0c1c38148ac596f4ab298938a082277e81dce8de4f2c3211aebc5940e67c6c75
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically http://netcdn.tw/app/431946152/roblox-download-game-hack. This redirector is used to lure victims with promises of game hacks and generators for popular games like Roblox and Minecraft. The document body and embedded URLs reinforce this lure, indicating a phishing or scam attempt to drive traffic to malicious sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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 http://netcdn.tw/app/431946152/roblox-download-game-hack In PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/free-robux-place_GM431946152.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/coin-master-hack-spins-download_GM406889139.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/is-free-robux-real_GM431946152.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/pokemon-go-free-download-play-store_GM1094591345.pdfIn PDF document text
    • https://www.biofarshrimpskincare.com/ckfinder/userfiles/files/coin-master-heaven-free-spins-today_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
font_00_sfnt_off00002b4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B4A 22300 bytes
SHA-256: 073ec4ecccbfd275d37565a6512e7a397e29f966c3cfca7f55477146c8b42de0
font_01_sfnt_off00005cd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD2 18992 bytes
SHA-256: 42498b2248152e2d1ea08a4c56450afe296108018df271c09413f6b867f34853

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