PDF malware analysis — malicious · 8ae15d80d1cd01e7

MALICIOUS

PDF

46.3 KB Created: 2021-05-19 16:38:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23

MD5: a38a4e9a373f7ccf0c8747271ffc991f SHA-1: f7c35fce68d329b857cbaa570f10813272cb644f SHA-256: 8ae15d80d1cd01e7348ebbfdb2fb7b517f744eebdf71cc0c663502b39dc09cc7

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and freebies to trick users into clicking malicious links. The primary link, https://netcdn.xyz/app/1330123889/pubg-uc-hilesi-game-hack, is identified as a malicious redirector. The document also impersonates the Facebook brand in an attempt to increase click-through rates. No scripts were extracted, but the embedded URLs suggest a phishing or scam campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9977

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.
Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH

Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/1330123889/pubg-uc-hilesi-game-hack.
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/1330123889/pubg-uc-hilesi-game-hack In PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/coin-master-free-spins--coins-2021_GM406889139.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/free-executors-for-roblox_GM431946152.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/coinmaster-spin-ml_GM406889139.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/minecraft-linux-free_GM479516143.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://stain-madina.ac.id/assets/ckfinder/userfiles/files/free-robux-generator-2021-no-survey_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
`stream_003_off00004b10.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B10	34304 bytes
SHA-256: `596b44c8150164311b0b90120c6c2d85f7938c826fd4cd71a5dc5f49b4fb35e7`
`font_01_sfnt_off000093e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x93E5	18092 bytes
SHA-256: `fc4c191932d800d842714d36e6c60540d8d63251411344aa7d49a0f0df7b87dd`

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