PDF malware analysis — malicious · 31cd1148bc0d2f7a

MALICIOUS

PDF

50.3 KB Created: 2021-05-31 22:46:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 95ee47e7ecd041d20f7f14bc6000eead SHA-1: 1d7da6fd6b240a10335d2244a00b75967f8a8d53 SHA-256: 31cd1148bc0d2f7a9b1e11a5a29783ee5c859d1c845f6aaaf0b20cbe8c693ca8

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links to redirectors and potentially malicious websites, masquerading as game hack generators. The presence of a 'Password-protected archive handoff' heuristic suggests it may be part of a multi-stage attack designed to bypass security controls. The document's content and linked URLs strongly indicate a lure for users interested in free in-game currency or cheats, a common tactic for distributing malware or conducting phishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9769

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.
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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/how-to-get-robux-hack-that-really-works-game-hack In PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/como-hackear-conta-de-roblox_GM431946152.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/free-tiktok-views_GM835599320.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/give-me-free-robux_GM431946152.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/secret-cheats-for-roblox_GM431946152.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/how-to-get-free-robux-on-roblox-on-a-computer_GM431946152.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/roblox-hack-com_GM431946152.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/free-robux-glitch-july-2021_GM431946152.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/how-to-get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
- https://sktc.se/wp-content/uploads/fsqm-files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005303.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5303	27464 bytes
SHA-256: `34b89293e85c9cc4bc47698acacf023e7ce22305fe8c70e091cd4894e7e6cf77`
`font_01_sfnt_off0000921d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x921D	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_02_sfnt_off00009f2f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9F2F	19136 bytes
SHA-256: `d7fe42199e38624d89bf3e34b2c9873c465c05332d272f387866e01240a7b9dd`

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