Malicious PDF — malware analysis report

Static analysis result for SHA-256 4342787fd31479de…

MALICIOUS

PDF

34.1 KB Created: 2021-07-08 16:24:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: c0d210a35fd7295c9b756d1c6b9b44ce SHA-1: a80c13274bb181c77fbbd02d54b5590c17d5175d SHA-256: 4342787fd31479de02e72465dbd8819e0744026fe0c094c644c1845074f838f2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a game hack redirect lure, pointing to known malicious infrastructure. The embedded URL and document body text reinforce this, indicating a phishing attempt to trick users into visiting a malicious site. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/479516143/minecraft-gun-games-free-game-hack In PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/site-17-hack-gui-roblox-script_GM431946152.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/hacks-roblox-iceboss_GM431946152.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/roblox-jetpack-simolator-hack_GM431946152.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/how-to-get-hack-in-rake-roblox_GM431946152.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/minecraft-aimbot_GM479516143.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/how-to-hack-roblox-apocalypse-rising-2021_GM431946152.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/complete-obby-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/free-robux-in-a-roblox-game_GM431946152.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-2021-on-ipad_GM431946152.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/coin-master-cheat-codes_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_off000032ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32CA 22084 bytes
SHA-256: 5b76fcb47973ca77ba3e8740eebd42ead091d06b50ab481fbfd7ca4f8d21d4bd
font_01_sfnt_off0000630d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630D 18256 bytes
SHA-256: 1a5b8f0ff490882a45443305677932134da5891a7241cadf5a7a96653e7528b8

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