PDF malware analysis — malicious · 7d52157b906e0c45

MALICIOUS

PDF

35.7 KB Created: 2021-06-18 19:40:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22

MD5: b0131abc600768bf602106819f279368 SHA-1: 8934e8dffe90519b8f22f04b646325679767279a SHA-256: 7d52157b906e0c45e66933ad9d6a5526ae41a0bf90cdd7ed4a4935cca4999bac

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure of free Robux and game hacks to deceive users. It contains numerous links, including a critical redirector at http://netcdn.co/app/431946152/earn-free-robux-scam-game-hack, and a large number of SEO-optimized links pointing to other PDF files. The document body and heuristics indicate a scam workflow designed to lead users to potentially malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 5

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.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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 http://netcdn.co/app/431946152/earn-free-robux-scam-game-hack In PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/roblox-2021-cheat-engin_GM431946152.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-robux-rbx-tools_GM431946152.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/roblox-pocket-edition-free-download_GM431946152.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/how-to-make-a-group-for-free-on-roblox_GM431946152.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/roblox-unltimate-driving-cheats_GM431946152.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/hack-tool-roblox-pokemon-adventures_GM431946152.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/roblox-jailbreak-cheat-codes-and-hacks-for-samsung_GM431946152.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-roblox-hacks-with-no-offer_GM431946152.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/roblox-kohls-admin-house-infinite-edition-hack_GM431946152.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/roblox-when-will-bloxburg-be-free_GM431946152.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-robux-stream_GM431946152.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/pubg-uc-iraq_GM1330123889.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/redeem-code-for-free-robux_GM431946152.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/roblox-jailbreak-games-for-free_GM431946152.pdfIn PDF document text
- http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-coins-for-coin-master_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
`font_00_sfnt_off000032d8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x32D8	23080 bytes
SHA-256: `4766de4cb7891dfaf4fcfdbde8ce07176f7cbdd60ee947c107b4861c6c18df2e`
`font_01_sfnt_off000066e7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66E7	18976 bytes
SHA-256: `999059f6a8085034daafa8b1822ac7ff030f076c8e17b7e93c6f971d67eb2cfd`

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