PDF malware analysis — malicious · c776d10ce955d48b

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 05:51:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 2006805da73f7d47556c3d653c68ea77 SHA-1: 09a254408f59543028cbc30d10f55cdeeb04812e SHA-256: c776d10ce955d48bbceeab2dc2d1a6ec12382cc3e1eb9f97c9020d584bf336cf

180 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to external websites that offer game hacks and generators, identified as malicious redirectors. The document body and heuristics indicate a lure for downloading software, likely malicious or unwanted. The presence of embedded URLs and the nature of the lures suggest an attempt to trick users into executing further payloads, potentially via JavaScript or by downloading executables.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

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) 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.online/app/431946152/download-apps-for-robux-game-hack In PDF document text
- https://www.sarsen.net/uploads/files/files/hack-game-coin-master_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/minecraft-free-android_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-links-for-free-spins_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/tiktok-free-textbooks_GM835599320.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/master-coin-hack_GM406889139.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
`font_00_sfnt_off00004f94.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4F94	25636 bytes
SHA-256: `ff7eff23fcbc3f50d876da277430249bb39d89d3117f047447bf0d4510a6c2f4`
`font_01_sfnt_off00008a43.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A43	18996 bytes
SHA-256: `ea235c61f7ee6ff97cb8e2e4b8381115f9ce59fc272e8f2939e83a9622de1179`

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