PDF malware analysis — malicious · 1bad9552cb94ae3d

MALICIOUS

PDF

45.2 KB Created: 2021-05-30 05:11:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13

MD5: 1eb73fb32f175c60725010168bef0484 SHA-1: 305a63cd8db7b45e3459a7c8cc8ad4b2b24f8bd2 SHA-256: 1bad9552cb94ae3df7a7bee39a70d2833b6864939e127435783681f894fc1bd2

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure of free game currency and hacks, presenting a fake CAPTCHA to coerce users into clicking malicious links. The primary malicious link identified is https://netcdn.xyz/app/431946152/you-promised-my-son-free-robux-game-hack, which is associated with redirector infrastructure. The document's structure and embedded links suggest an attempt to exploit user interest in online games for malicious purposes, likely leading to further malware downloads or credential harvesting.

Machine Learning

Nyx PDF Classifier malicious score 0.9538

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.
Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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 https://netcdn.xyz/app/431946152/you-promised-my-son-free-robux-game-hack In PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/give-me-free-robux_GM431946152.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/tiktok-viewer-free_GM835599320.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/roblox-hack-game_GM431946152.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/get-free-robux-now_GM431946152.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/minecraft-realms-free_GM479516143.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/how-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/free-tiktok-likes-no-human-verification-or-download_GM835599320.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/free-minecraft-maps_GM479516143.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/free-robux-legit_GM431946152.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/free-robux-co_GM431946152.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
- https://vissalutis.pl/wp-content/uploads/fsqm-files/free-tiktok-views-no-verification_GM835599320.pdfIn PDF document text
- https://www.communes.comIn 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_off00004eb1.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4EB1	26564 bytes
SHA-256: `6cc8ea37996627e328b1c4a6f71661f66c9293e54c49035f6d54fb76910d9a8b`
`font_01_sfnt_off00008b54.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B54	19260 bytes
SHA-256: `86e86c6d1a3146e1f407edd8c9cf68c56566e4a3a2a05930f639aef478547eb3`

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