PDF malware analysis — malicious · 97adf680f29d7342

MALICIOUS

PDF

46.9 KB Created: 2021-06-04 01:33:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 659731dea7c27d66f82617828aa0a2bc SHA-1: 0af4f035a5c9fd18e098c023c9049de16fe2ce84 SHA-256: 97adf680f29d7342d3311929c3d4260658c841f799d5d642a61c28b6e0b6cffb

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to a redirector URL, masquerading as a "game hack" and impersonating the Facebook brand. This strongly suggests a credential phishing or malicious redirection attempt. While no scripts were extracted, the PDF structure and embedded URLs are indicative of a social engineering attack designed to trick users into clicking malicious links.

Machine Learning

Nyx PDF Classifier malicious score 0.9769

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.online/app/406889139/coin-master-spins-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.online/app/406889139/coin-master-spins-game-hack In PDF document text
- http://library.poltekkes-palangkaraya.ac.id/repository/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id//repository/buy-robux-free_GM431946152.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id//repository/earn-roblox_GM431946152.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id/repository/coin-master-game-hack-kaise-kare_GM406889139.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id/repository/coin-master--hack_GM406889139.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id/repository/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id//repository/minecraft-app-store-free_GM479516143.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id/repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id/repository/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id/repository/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id//repository/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id//repository/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id//repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id/repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id//repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id/repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
- http://library.poltekkes-palangkaraya.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off0000550d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x550D	24160 bytes
SHA-256: `c10705ee3b5875cb6277cd313c0d6058a263d71df13beed5eb1ee9534bed97ae`
`font_01_sfnt_off00008c82.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C82	2840 bytes
SHA-256: `30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37`
`font_02_sfnt_off00009634.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9634	17724 bytes
SHA-256: `9e6e11cb276c7dd66a19f48669c6f0c9fad7b2850a2ee7a5573e48fd717a5b28`

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