PDF malware analysis — malicious · 72acc3804dc02aca

MALICIOUS

PDF

32.5 KB Created: 2021-07-19 16:44:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 33bcbf330fb06e9a0fb752a86080ec96 SHA-1: 655d2400e03141782ec44a4ac5f57261fcee4ec1 SHA-256: 72acc3804dc02aca36d61d277fef7f0963df875061ea7fffc74cba10ae2de4b2

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary redirector URL is http://netcdn.tw/app/835599320/free-views-on-tiktok-game-hack. The document body and heuristics indicate a clear intent to trick users into visiting these malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9900

Heuristics 4

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.
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/835599320/free-views-on-tiktok-game-hack In PDF document text
- http://eurosystemssrl.it/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
- http://eurosystemssrl.it/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
- http://eurosystemssrl.it/images/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
- http://eurosystemssrl.it/images/free-robux-please_GM431946152.pdfIn PDF document text
- http://eurosystemssrl.it/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
- http://eurosystemssrl.it/images/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
- http://eurosystemssrl.it/images/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- http://eurosystemssrl.it/images/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
- http://eurosystemssrl.it/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- http://eurosystemssrl.it/images/minecraft-gun-games-free_GM479516143.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_002_off00002ae1.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2AE1	22876 bytes
SHA-256: `8f4b956e99c1e006455e18307c52d3a6d1503e49dbf886f138ca36df9679e2ba`
`font_01_sfnt_off00005e5c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E5C	17752 bytes
SHA-256: `0bba4198fd0ca9d20010dde6368f831223727c1fd110b32f8bd9ae0070f69573`

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