PDF malware analysis — malicious · 18009a645097d7d4

MALICIOUS

PDF

42.1 KB Created: 2021-05-11 05:01:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22

MD5: bafa03209d3087426351b5448788251f SHA-1: 64fe5249b85dbf7dc12412c6e971bf85e447e930 SHA-256: 18009a645097d7d4bc5ac9ae8be9e3f658a76c779a052d3c1a1d09796afccd72

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting a "Coin Master Unlimited Spin Hack Apk". The presence of a call-to-action button and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful sites. While no scripts were directly extracted, the PDF structure itself facilitates the redirection, likely exploiting a vulnerability or social engineering to achieve execution.

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-unlimited-spin-hack-apk-game-hack In PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/gain-robux_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/free-robux-exe_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/corn-master_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/coin-master-hack-tool-v1-9-pc_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/free-robux-ad_GM431946152.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/master-coin-hack-mod_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
- https://www.iseas.com/uploaded_files/userfiles/files/minecraft-apk-download-v1-144-2-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_off000048e0.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x48E0	24812 bytes
SHA-256: `0bbbd96405b891fafc098e9bb5b86ea057dcfd5f34990292df4d160c3573b89d`
`font_01_sfnt_off00008153.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8153	18584 bytes
SHA-256: `1f0ff171152404fee35ded77e01b9724573d4b9224166749f75d1c5d7d8d4db8`

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