PDF malware analysis — malicious · bd307a5205350125

MALICIOUS

PDF

45.8 KB Created: 2021-05-17 08:59:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16

MD5: ddb96ad64e0d1096e49969e05caa2d75 SHA-1: ee38ef81730f3cc4b8e61d48748dea8339c6ce5b SHA-256: bd307a5205350125b19df0806b8fdae8937a24a8878e1fca080f94c9ada9fc61

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains multiple links to known malicious redirectors, disguised as 'game hacks' for popular mobile games. The document body and embedded links suggest a lure to download potentially unwanted or malicious software. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector workflow, likely intended to deliver a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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-2021-android-game-hack In PDF document text
- https://emindonesia.com/assets/CKImages/files/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/best-tricks-co-robux_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/free-robux-app-real_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/free-roblox-accessories_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/free-robux-download_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/coin-master-fan-page_GM406889139.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/free-robux-no-download_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/coin-master-hacks_GM406889139.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/roblox-hack-com_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/coin-master-free-spins-cheats_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_off00004997.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4997	34060 bytes
SHA-256: `e3b5f3689a904fd0203fd6c18f70a00ab51ba94540a5fdd0db22bef487c9cacc`
`font_01_sfnt_off000090a5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x90A5	18292 bytes
SHA-256: `27f4b60df4c5b9b58df513bbeae6e0a7300ac945a9a466f89e8a511806a668c2`

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