Malicious PDF — malware analysis report

Static analysis result for SHA-256 34171b3a9fadd48c…

MALICIOUS

PDF

45.5 KB Created: 2021-05-14 08:30:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 385cc90127ee18e802be0b940bcd7ba4 SHA-1: fad23b78d935fbbd34d80f4f7bc5843d5cc0bb41 SHA-256: 34171b3a9fadd48c96d0bed710bf383063e81011b8c2915e80f8c63514d3e89d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains links that redirect to malicious infrastructure, specifically promoting 'free Robux' and game hacks. The presence of multiple embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful sites. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest a lure for users to download further malicious content or visit phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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.xyz/app/431946152/free-robux-codes-game-hack In PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/roblox-ftw_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/ww-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://robuxhaxs.comIn PDF document text
    • http://192.168.0.99/%20%3Cp%3E%3Cp%3Ehow%20to%20get%20free%20tbc%20on%20roblox%202018%3Cp%3E%3Cp%3Eroblox%20jailbreak%20teleport%20hack%202018%3Cp%3E%3Cp%3Enuebo%20hack%20de%20robux%202019%20atualizasion%3Cp%3E%3Cp%3Efree%20roblox%20gift%20card%20uk%3Cp%3E%3Cp%3ERoblox%20Robux%20Hack%20Free%20Robux%20And%20Also%20Robux%20Online.%20Roblox%20Booga%20Booga%20Hacks%20New%20Roblox%20Exploits%20Cheats.%20How%20To%20Use%20Cheat%20Engine%20With%20Pictures%20Wikihow.%20Roblox%20Hack%202019%20Hack%20Cheats%20No%20Survey%20Unlimited%20Robux.%20Roblox%20Hack%20Dll%20Download%20Robux%20Hack%20Cheat%20Engine%2063.%3Cp%3E%3Cp%3Eroblox%20free%20black%20shirt%3Cp%3E%3Cp%3E%C2%A92021%20Roblox%20Corporation.%20Roblox,%20the%20Roblox%20logo%20and%20Powering%20Imagination%20are%20among%20our%20registered%20and%20unregistered%20trademarks%20in%20the%20ROBLOX%20Hack%20and%20Cheats%20Features:%20=%20Get%20Unlimited%20Robux%20=%20Generate%20As%20Much%20Tix%20As%20you%20Want%20=%20Share%20with%20your%20friends%20=%20Stable%20update%20with%20new%20With...%3Cp%3E%3Cp%3EComo%20tener%20robux%20gratis%20prision%20life%20khanh%20dep%20zai.%20It%20has%20a%20fly%20in%20roblox%20hack%20and%20you%20can%20in%20roblox%20fly%20out%20of%20prison%20life%20using%20it.%20Videos%20Matching%20This%20Is%20How%20To%20Get%20Free%20Robux%20With%20Pastebin.%20New%20roblox%20glitch%20gives%20free%20robux%20ios.%20Robux%20gratis%20prison%20life.%20However%20to%20earn%20robux%20is%20very%20hard%20and%20tough.%3Cp%3E%3Cp%3E%3Cstrong%3EReferences:%3C/strong%3E%3C/p%3E%3Cp%3E%3Ca%20href=In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ce8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CE8 24444 bytes
SHA-256: 57bf7ea9c5ccbdc224fbca856e2218fe894df37074166cf015c4a0fbaec46fad
font_01_sfnt_off000084d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D1 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00009178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9178 17612 bytes
SHA-256: d5185b1e6e3d361234e548d495f2adb2a2b6e5284d50fd089fc6c795045c0acc

Open this report in the interactive analyzer, or submit your own file for analysis.