PDF malware analysis — malicious · 95bb27b8629744d6

MALICIOUS

PDF

36.0 KB Created: 2021-07-04 19:34:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31

MD5: e9d9c6dd66bbd5fb1d537e75045a8ba9 SHA-1: 68638084324758559f4bc6960e45d4f54a844d8d SHA-256: 95bb27b8629744d647630ba93fcf84954266fd0f332aa1b1af15da5a5ac542e1

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on what appear to be game-related hacks or generators. These links lead to known malicious redirectors and a large number of other PDFs, suggesting a link farm or SEO manipulation tactic. The document body and heuristics indicate a clear intent to redirect users to potentially harmful external sites.

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.
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 http://netcdn.tw/app/431946152/games-on-roblox-that-give-you-free-robux-game-hack In PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/play-minecraft-online-free_GM479516143.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-robux-hack-v3rmillion_GM431946152.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/murder-mystery-2-roblox-cheats-free-elite-and-radio_GM431946152.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/easy-way-to-earn-free-robux_GM431946152.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-robux-codes-download-2021_GM431946152.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/roblox-free-avatar-makers_GM431946152.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/how-do-you-hack-in-roblox-by-using-a-phone_GM431946152.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/roblox-login-free-no-download_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_off000033d8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x33D8	22528 bytes
SHA-256: `79fd698dec680eaac1b3cb3adf2c54b65b3874c9c59c1f2045811d79a73dcd8c`
`font_01_sfnt_off0000661d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x661D	19716 bytes
SHA-256: `3217d2b45e6aba390097db31ed4f489c97a69b2175e2ab7441deb7edbbce2f2f`

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