Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc07810e1849209d…

MALICIOUS

PDF

35.8 KB Created: 2021-06-19 13:16:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 1f8a860d5828b1c31ca7ec19a343ac7c SHA-1: 6d71b59d302c2d139ba3247f4ba8bcbfc5fb2e1b SHA-256: fc07810e1849209d8664d72d0e41ca191ae5b0333069da0b84d8d91bd9c9921b
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, specifically advertising game hacks and generators. The heuristic firings indicate that these links are known malicious redirectors and are part of a lure for free game items. While no scripts were explicitly extracted, the nature of the lures and the embedded URLs suggest an attempt to lead the user to a site that may host further malicious content or exploit kits.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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.co/app/431946152/roblox-troll-players-inject-script-hack-game-hack In PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/earn-robux_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-heaven_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-adopt-me-pets_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/robux-2021_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-a-refund-on-roblox-2021_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_off0000343b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x343B 22232 bytes
SHA-256: 744fee4aa40eba28d00164c723e99faad146f0e915404086c59a5b112fcbaec3
font_01_sfnt_off00006560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6560 19580 bytes
SHA-256: 2029aa0c7d31de53168e5f84d32e64d4ae9a5b96ed90990a8662ba527ecfee09

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