PDF malware analysis — malicious · f7e6cff5080c0da8

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 12:13:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25

MD5: e6a5c3d4f63a28512cf6ccd91499a62c SHA-1: 49df4cbda5368f42a9bd1b3e0061173626f07d9b SHA-256: f7e6cff5080c0da86922fc2f887fc683835e47b0325b15805aaf135f721b7b31

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically promoting 'free Robux' or 'game hacks'. The primary lure directs users to http://netcdn.tw/app/431946152/give-me-free-robux-game-hack, which is flagged as malicious infrastructure. While no scripts were extracted, the document's structure and embedded URLs strongly indicate a phishing or scam attempt designed to redirect users to potentially harmful sites. The use of game-related lures is a common tactic for social engineering.

Machine Learning

Nyx PDF Classifier malicious score 0.9982

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/431946152/give-me-free-robux-game-hack In PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/dragon-ball-super-2-roblox-hack_GM431946152.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/free-800-robux_GM431946152.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/robux-hack-tools_GM431946152.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/roblox-toy-codes-list-free_GM431946152.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/robux-hack-console_GM431946152.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/denisdaily-robux-hack_GM431946152.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/red-kine-cheat-roblox_GM431946152.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/robux-fre-codes_GM431946152.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/free-spins_GM406889139.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/minecraft-mac-free_GM479516143.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/roblox-robux-hack-script-jquery_GM431946152.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
- http://www.sourcology.com/uploaded_files/userfiles/files/hack-meep-city-roblox_GM431946152.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
`font_00_sfnt_off00002e17.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E17	22604 bytes
SHA-256: `d149e6130adb85fd4b41bb0d0281b9bcd26fc27d7438297467b4d34382e2b11b`
`font_01_sfnt_off000060cd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60CD	19144 bytes
SHA-256: `49caa2a42633a23caf301bb0fa3c0edf25e4e3c2cd040ebd05f96fd152ca8770`

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