PDF malware analysis — malicious · b5e92c811f8b414d

MALICIOUS

PDF

41.7 KB Created: 2021-05-13 03:30:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27

MD5: e56bf171179aa07bf872eea0fe6fc9f5 SHA-1: a6edaef67e0aea1d3458d2a5ff868b1125edbf6b SHA-256: b5e92c811f8b414d2d63b214b4f627d4c4509bb2aebff2cc4f36e2a352fab1d3

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting "game hacks" and "free spins" to lure users. The document body and heuristics indicate a phishing or scam attempt designed to drive traffic to these malicious sites. While no scripts were explicitly extracted, the PDF format itself can embed JavaScript, and the malicious links suggest a potential for further exploitation or redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-free-spins-hack-game-hack In PDF document text
- https://itv-grabungen.de/images/rbx-earn_GM431946152.pdfIn PDF document text
- https://itv-grabungen.de/images/coinmaster-spins_GM406889139.pdfIn PDF document text
- https://itv-grabungen.de/images/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
- https://itv-grabungen.de/images/minecraft-114-download_GM479516143.pdfIn PDF document text
- https://itv-grabungen.de/images/coin-master-fan-page_GM406889139.pdfIn PDF document text
- https://itv-grabungen.de/images/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdfIn PDF document text
- https://itv-grabungen.de/images/coin-master-free-gift-links-2021_GM406889139.pdfIn PDF document text
- https://itv-grabungen.de/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://itv-grabungen.de/images/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
- https://itv-grabungen.de/images/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
- https://itv-grabungen.de/images/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
- https://itv-grabungen.de/images/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
- https://itv-grabungen.de/images/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
- https://itv-grabungen.de/images/blox-land-free-robux_GM431946152.pdfIn PDF document text
- https://itv-grabungen.de/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
- https://itv-grabungen.de/images/free-rewards-coin-master_GM406889139.pdfIn PDF document text
- https://itv-grabungen.de/images/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
- https://itv-grabungen.de/images/coin-master-unlimited-spin-apk-free-download_GM406889139.pdfIn PDF document text
- https://itv-grabungen.de/images/free-robux-now_GM431946152.pdfIn PDF document text
- https://itv-grabungen.de/images/minecraft-for-macbook-free_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
`stream_003_off00004947.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4947	24752 bytes
SHA-256: `467b21f15e266d5cccae2ba43e17882034dc1140d5de10c5aebfbf890ac90d7d`
`font_01_sfnt_off00008129.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8129	18056 bytes
SHA-256: `5bc30252b20e252a4e4f12754ee6fd7a8bdc905346c0352a18cf9aa56584dd16`

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