PDF malware analysis — malicious · 7ca676bad682458c

MALICIOUS

PDF

37.1 KB Created: 2021-06-29 16:07:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 5b1b1bfc3edc6be442f938bc00ba4010 SHA-1: f02b088c614146183492922f981ebffa31dcebe8 SHA-256: 7ca676bad682458cdca6c19f303f012fad37a2debc23feffb3774a87830080d9

180 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "free Robux" and "game hacks" for Roblox. The document body and heuristic firings indicate a lure designed to trick users into clicking these links, likely leading to further malicious content or downloads. No scripts were extracted, but the embedded URLs and the nature of the lure strongly suggest a phishing or scam attempt.

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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/ways-to-get-free-robux-2021-game-hack In PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-level-7-hack-roblox_GM431946152.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/how-to-get-free-gamepasses-on-roblox-no-hacking_GM431946152.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/roblox-name-chnace-hack_GM431946152.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/roblox-hacks-2021-for-robux_GM431946152.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/promocode-hack-for-robux_GM431946152.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/hack-someone-roblox_GM431946152.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-hair-roblox-not-moel_GM431946152.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/robux-free-in-roblox_GM431946152.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/how-to-get-free-robux-without-verification-on-ios_GM431946152.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-code-generator-for-roblox_GM431946152.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/roblox-clone-hack_GM431946152.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-robux-now_GM431946152.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/watch-a-video-for-free-robux_GM431946152.pdfIn PDF document text
- http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-games-like-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
`stream_002_off000037a5.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x37A5	22676 bytes
SHA-256: `57643d7f3f06ab6e2d940975c7ff1e3923cd0eb1dd73ab2b1175b1c5a9553bd1`
`font_01_sfnt_off00006a5a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A5A	19600 bytes
SHA-256: `c00d54827bcee88cdbe96b013b7ed3ba2b531ed1e4e5548e429b871c3375097c`

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