PDF malware analysis — malicious · 4d4f0d42032f86e7

MALICIOUS

PDF

43.2 KB Created: 2021-05-10 18:25:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: a83629fbd285fa876064a31bb477f6b3 SHA-1: 2217ac37a12b6e026af26c66fdd5f910bef61080 SHA-256: 4d4f0d42032f86e74b18f25f4cbb233d968c02a1994746daaf6e61d7d06fb8c4

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The ML classifier also flagged this PDF as malicious. The embedded URLs and the nature of the lures suggest a phishing or scam attempt, likely delivered as a spearphishing attachment. No scripts were extracted, but the document's structure and embedded URLs are sufficient to determine its malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

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-hack-org-game-hack In PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/free-pet-food-coin-master_GM406889139.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/actual-free-robux_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/robuxhub-net_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/roblox-robux_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/roblox-verification_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/inappropriate-roblox_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/how-to-get-minecraft-bedrock-edition-on-pc-for-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_off00004d19.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D19	25200 bytes
SHA-256: `8340c9f35a494f0e20f5c006fc99fcc5144e05aebac026c4171e20aee5e02c80`
`font_01_sfnt_off00008743.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8743	18004 bytes
SHA-256: `71666c2197313d621a6b2a827eddb6a2562d87326f0c206ff98056d3ecc5d719`

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