PDF malware analysis — malicious · ee241769b920b42d

MALICIOUS

PDF

44.3 KB Created: 2021-05-14 11:41:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: 935dd3e2cc31fa1ac0090b3f6a8102c9 SHA-1: 131306deaedbc3d21e5c04c78dd63b85ee592284 SHA-256: ee241769b920b42de94665b52cd91277e7e14912e768c1148da45a35f1d1ab5e

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document employs a lure for game hacks and free currency, impersonating brands like Facebook and Roblox to entice users. It contains multiple links to known malicious redirectors and potentially malicious PDF files hosted on `sponajaib.com`. The primary goal appears to be credential harvesting or directing users to malware downloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 6

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.
Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH

Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/roblox-executor-free-game-hack.
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) 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 https://netcdn.xyz/app/431946152/roblox-executor-free-game-hack In PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/free-robux-wheel_GM431946152.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/hack-robux_GM431946152.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/i-cant-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/free-star-codes-roblox_GM431946152.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/coin-master-working-hack_GM406889139.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/oprewards-login_GM431946152.pdfIn PDF document text
- https://sponajaib.com/ckfinder/userfiles/files/claimrbx-free-robux_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.

Filename	Kind	Source	Size
`stream_003_off00004a69.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A69	28024 bytes
SHA-256: `e304708a2ca522c15b7f415f8264c477215cd519c41c0cbe4bd48a5c06b6f732`
`font_01_sfnt_off00008b5c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B5C	18192 bytes
SHA-256: `ea871bc3cbe03b518fb751ba62897ebdd4c1203063e0cc28c04b209086b68926`

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