Malicious PDF — malware analysis report

Static analysis result for SHA-256 14d8ad7ea1078aba…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 15:28:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b389999b4172cf67103d6db15a066f46 SHA-1: ae1fefbb8a7e6711938139692a85699bd16cee58 SHA-256: 14d8ad7ea1078aba938b2eb65c6fe8f9e1ca2b5dadd9d7ccd062e366a558e401
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links, including one to a known malicious redirector, masquerading as game hacks and generators. These links likely lead to further malicious content or phishing sites. The document's structure and embedded URLs strongly suggest a social engineering lure to trick users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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-pink-free-robux-game-hack In PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/change-walkspeed-in-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/hack-download-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/roblox-robux_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/is-pokemon-go-free-on-iphone_GM1094591345.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/free-roblox-accounts-with-robux-2021-november_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/rbx-robux_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/robux-boost_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/how-to-get-minecraft-java-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
font_00_sfnt_off00003287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3287 22536 bytes
SHA-256: c33d9681d0afcee46730b9af6fbf90898e97afd761fc485cf7d5c3d379f9b7dd
font_01_sfnt_off00006489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6489 19236 bytes
SHA-256: 7f3ae533f1b20c2c9ad227d8ec2a812f6ca4ef2a098c849ad4932b76dc1c09fe

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