PDF malware analysis — malicious · cb0262ac05be83a2

MALICIOUS

PDF

46.0 KB Created: 2021-05-31 20:22:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13

MD5: 347e010a2088c2838a49b70792154012 SHA-1: d8fb8d81c5b88a554c4aa1ed00c248f74e304fa4 SHA-256: cb0262ac05be83a2d9390c2f827b986ef0b318f82fef19e2d865e1ad7c1801ca

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to lure users to websites offering 'free Robux' or 'game hacks'. These links redirect to malicious infrastructure, indicating a phishing or scam attempt. The document body and heuristics confirm the malicious redirection and link farming behavior.

Machine Learning

Nyx PDF Classifier malicious score 0.9864

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.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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/free-robux-real-2021-no-human-verification-game-hack In PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/field-of-battle-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-robux-gift-card-codes-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-robux-generator-no-survey-no-download-2021_GM431946152.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/hacking-roblox-assain_GM431946152.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/prison-break-roblox-hack-script_GM431946152.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/try-minecraft-free_GM479516143.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-minecraft-server_GM479516143.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-tiktok-hearts_GM835599320.pdfIn PDF document text
- https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-spins-for-coin-master-app_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
`stream_004_off000053ff.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x53FF	25344 bytes
SHA-256: `1c84c3722724e64d45308ba2a82c3646b7c809d8510dbe88cfb2946794fbde59`
`font_01_sfnt_off00008df8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DF8	19336 bytes
SHA-256: `82ff02debe91fffc1a15b1189cc4d0188fc51a3385539fc8eaf1866d82bdc188`

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