PDF malware analysis — malicious · 1788c280024faea1

MALICIOUS

PDF

35.2 KB Created: 2021-07-06 09:04:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: f39d6066ba7b6e1a1b9a7e2afde650c2 SHA-1: 024235775f299d5b376aaac5dce66d4278a35537 SHA-256: 1788c280024faea1d4d7957480aa1627e042ef53be5cdfbef8e053d5feaf2316

180 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising 'hacks for Roblox' and other game-related cheats. The primary lure URL is http://netcdn.tw/app/431946152/hacks-para-roblox-game-hack. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/hacks-para-roblox-game-hack In PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-rare-cards-for-coin-master-christmas_GM406889139.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/descargar-natevangisapotato-stella-hacked-roblox_GM431946152.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/how-to-get-more-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/roblox-comcom_GM431946152.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-robux-no-password_GM431946152.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/roblox-hack-download_GM431946152.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/my-roblox-place-hack-by_GM431946152.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/roblox-install-free_GM431946152.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/minecraft-free-online_GM479516143.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-bc-generator-roblox_GM431946152.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/tiradas-coin-master_GM406889139.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/is-it-possible-to-get-hacked-through-roblox_GM431946152.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/doomsdire-battle-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.medlinerecruitment.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
- https://www.roblox.com/.IIn 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_off00003409.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3409	22280 bytes
SHA-256: `baf72050fe5c76b23208137e2a9529f19e8d4e2707e7220c00d9d8995e9873ba`
`font_01_sfnt_off0000654b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x654B	18808 bytes
SHA-256: `18c04ed6d416389464b421298170c47648070a4b7ff5aa0adb6f039d676fa700`

Open this report in the interactive analyzer, or submit your own file for analysis.