PDF malware analysis — malicious · 96c9ebacfdb6520c

MALICIOUS

PDF

44.0 KB Created: 2021-05-22 22:43:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 99b4863df2c0555fcf1f6abbdca7b261 SHA-1: 9a993828eb9020a7d9038ef3da9670c263ee395b SHA-256: 96c9ebacfdb6520cf3dacc2146541e0f83638799092639537665239e37cf5a5a

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating malicious redirector links, specifically targeting users with lures for game hacks and free currency. The document body, though heavily obfuscated, contains references to 'Roblox Generator' and a URL pointing to known malicious infrastructure. The presence of embedded URLs and the nature of the lures suggest an attempt to trick users into downloading or executing a secondary payload, likely through a malicious redirect.

Machine Learning

Nyx PDF Classifier malicious score 0.7281

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.
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
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/can-u-get-free-robux-game-hack In PDF document text
- https://www.simplytravel.co.za/images/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
- https://www.simplytravel.co.za/images/tiktok-free-likes-no-verification_GM835599320.pdfIn PDF document text
- https://www.simplytravel.co.za/images/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
- https://www.simplytravel.co.za/images/free-draw-roblox_GM431946152.pdfIn PDF document text
- https://www.simplytravel.co.za/images/free-mods-for-coin-master_GM406889139.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
`font_00_sfnt_off000034f6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x34F6	31744 bytes
SHA-256: `a72d26f7ad307bbcaffa88b65bbcbc2085dbaf9aa49b338faf0660bfffdd3e66`
`font_01_sfnt_off00007a37.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A37	4660 bytes
SHA-256: `b8980cdac4d025496d9fe039d8c05bb5b9bae1b804244a1f9c05e9663db72816`
`font_02_sfnt_off00008a47.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A47	18532 bytes
SHA-256: `35bb0f01f69d1b5e790ed5f4c0eeb98998139975dc1eb58b588dc01b9002bbc1`

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