Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e46c2cd1981b329…

MALICIOUS

PDF

33.1 KB Created: 2021-07-03 21:41:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 0b654caf7c3f2bb1aa21c67577c104b9 SHA-1: 2b5c7f8b645681e11ac558ee806e3b51adcc1e49 SHA-256: 4e46c2cd1981b329fcf31a2d09fe48e11f368931def70d60cda44bf8febc34c5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to a known malicious redirector, disguised as a lure for free game currency and hacks. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely to lead users to further malicious content or malware downloads. The ML classifier also flagged this document with high confidence.

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/431946152/free-robux-real-2021-game-hack In PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/cool-free-hands-roblox_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/hacks-para-pixel-gun-roblox_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/overblox-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-bonus_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-village-3_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/boy-clothes-free-roblox_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/op-rewards-robux_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/lucky-patcher-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/how-to-ban-or-kick-in-servers-roblox-hack-script_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/free-apk-mod-coin-master_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/how-to-get-robux-cheat-for-free_GM431946152.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_off00002d9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D9F 21180 bytes
SHA-256: 392589fe51596d50f388c06c46ab0e4e01afca31b826ce4048fab92558e2b076
font_01_sfnt_off00005bcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BCF 19192 bytes
SHA-256: 0a56f38ee828cc338b4ecf6fd69a1c4ab782641ccce74c835442ee7dbad06135

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