PDF malware analysis — malicious · 1451a21448e07998

MALICIOUS

PDF

34.6 KB Created: 2021-06-22 06:40:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16

MD5: 734d7d4cda2c2fff6928826cbf0fe9c1 SHA-1: bf522df3baeb317b1f8840bbc2707e3ab04d9284 SHA-256: 1451a21448e079989668a59f8164862304de463692480074046ff6290437f956

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains lures related to game hacks and free in-game currency, directing users to a known malicious redirector URL. The document body and heuristics indicate a social engineering tactic to trick users into clicking malicious links. No scripts were extracted from this sample, but the embedded URLs and redirector findings strongly suggest a phishing or scam attempt.

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 http://netcdn.co/app/431946152/how-to-hack-other-people-roblox-accoubt-game-hack In PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-coin-master-generator_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/does-roblox-have-free-snacks_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/robux-free-online_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/hacks-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/roblox-free-adiidas_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-holiday-crown-roblox_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/get-me-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/weapon-hack-roblox-pastebin_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/roblox-tbc-free_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-minecraft-skin-creator_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_off0000301e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x301E	22064 bytes
SHA-256: `93b6a2fda3e12eaccc56cb74aac14fb72662183815d6d68330a487cf75617b84`
`font_01_sfnt_off000060d2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60D2	19560 bytes
SHA-256: `6dca64710647ea92a3ea7d7c1754d79a6deb0ccdb6a676699efb6343cfdc5069`

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