PDF malware analysis — malicious · 1ac280065786e3ee

MALICIOUS

PDF

35.2 KB Created: 2021-06-21 02:47:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 0738971f9c9a803b25870eea33490017 SHA-1: b7c5f0190f960d1a02434cfd547ff2b8acd2ff41 SHA-256: 1ac280065786e3ee91c90f791ee2e06f9a7cdcdfb124a454958e40c69dfbb299

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links designed to lure users to external sites, including a known malicious redirector. The document body explicitly mentions 'Free Robux No Human Verifaction And Survey' and includes URLs pointing to game hacks and generators. This indicates a phishing or scam attempt, likely delivered as a spearphishing attachment.

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/free-robux-no-human-verifaction-and-survey-game-hack In PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/got-hacked-on-roblox-can-i-get-my-stuff-bck_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-2021-2021_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/minecraft-games-online-free-no-download_GM479516143.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/roblox-hack-cheat-free-robux-generator-online-exploit_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/hacks-for-games-roblox_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/without-pokemon-go-free-pokeballs_GM1094591345.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-no-survey-or-download-2021_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/today-coin-master-spin-free_GM406889139.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/more-robux_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/roblox-how-to-hack-survive-the-disasters_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/rbx-roblox_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/minecraft-games-to-play-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
`font_00_sfnt_off00003248.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3248	21840 bytes
SHA-256: `712e6ffa39633397461d299b6ace7d3ec02cb431d964b0c27526746fe9ec7c79`
`font_01_sfnt_off0000623e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x623E	19800 bytes
SHA-256: `fcd4d125090859beb8b270f882485097339e29693181c3776c14839bc9dcd643`

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