PDF malware analysis — malicious · 79dcf7838a8793d2

MALICIOUS

PDF

42.4 KB Created: 2021-05-16 12:43:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27

MD5: dfa54605ac87eb4f52235ba7e56b602d SHA-1: f27013000c1b1415025c45b5e89ce700db53c7b5 SHA-256: 79dcf7838a8793d291e9cff8bccbd40a555950e2338e43800272d9357702c6f2

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, specifically promoting 'game hacks' and 'free generators'. The document body, though partially obfuscated, contains a URL that aligns with the heuristic findings. The primary lure is to trick users into visiting a malicious site, likely to download further malware or engage in scams.

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/how-to-hack-m-coins-mcpe-master-game-hack In PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/tiradas-coin-master_GM406889139.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/body-roblox_GM431946152.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/free-minecraft-coins_GM479516143.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/how-many-levels-does-coin-master-have_GM406889139.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/coin-master-free-spin-and-coin-link-today_GM406889139.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/coin-master-app_GM406889139.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/free-robux-app-real_GM431946152.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/coin-master-hack-generator_GM406889139.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/roblox-rewards_GM431946152.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.alloywheels.in/uploaded_files/userfiles/files/coin-master-hack-apk-download-2021_GM406889139.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_off00004abf.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4ABF	24756 bytes
SHA-256: `c905196e4652107a2befc871149b921550449ba6d17e941e847acf3a3a8de1a4`
`font_01_sfnt_off000083de.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83DE	18056 bytes
SHA-256: `b9a677f3ada20553b3a09ae09d1cc018ae00059cde0233d02195c796eebbdcfd`

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