PDF malware analysis — malicious · d73ebffc31e82508

MALICIOUS

PDF

34.1 KB Created: 2021-07-03 13:44:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23

MD5: 9bc9cd646c4d74f1fda7a5b6934069a5 SHA-1: e002c8decfdc7d77375bdc0670c7c9a9ec201d79 SHA-256: d73ebffc31e82508c0d66d4f220491a2de744d23660ff8dda0b8a9f009733062

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game items and hacks to trick users into clicking malicious links. It contains a high density of external links, many pointing to SEO-optimized PDF files hosted on a suspicious domain, and one direct link to a known malicious redirector. The primary lure appears to be related to Minecraft and Roblox, suggesting a phishing or scam campaign.

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/479516143/minecraft-pocket-edition-free-apk-game-hack In PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-robux-eith-no-verifications_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/pubg-uc-gift-card-free_GM1330123889.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/roblox-skin-free_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-robux-for-free_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-robux-safe_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-to-get-roebucks_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/minecraft-free-download-chromebook_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
`font_00_sfnt_off0000310f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x310F	22092 bytes
SHA-256: `b0b5d1e214c4e3575beacc14499943ce261541242805fdf7d5b50349ed9b69fb`
`font_01_sfnt_off000061a3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61A3	18672 bytes
SHA-256: `3e2f23e0331418b6b8b756e9ab8a4e4cea054b51d170e767955415f920785c5a`

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