PDF malware analysis — malicious · 1d642ea3a95fba59

MALICIOUS

PDF

37.8 KB Created: 2021-07-09 22:23:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27

MD5: e1f6716897ca393f4c6e1723b9811f75 SHA-1: a57200e3e7c4e25be4a03fdee5b8a1ead990dd81 SHA-256: 1d642ea3a95fba59a2ac38551a18638fee3d57d851801c2ac7b846f914ecca12

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to known malicious redirectors and other potentially malicious PDF files, disguised as game hacks and free item generators. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the ML classifier strongly indicate malicious intent. The document body and embedded links suggest a lure to download further malicious content, likely exploiting vulnerabilities or delivering malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9886

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.
LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND

Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
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.tw/app/406889139/cheats-for-coin-master-game-hack In PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/roblox-team-change-script-pastebin-hacking_GM431946152.pdfIn PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/master-coin-hack-apk_GM406889139.pdfIn PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/coin-master-card-hack_GM406889139.pdfIn PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/free-tiktok-app_GM835599320.pdfIn PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/free-robux-flame-gg_GM431946152.pdfIn PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/how-to-become-unkillable-in-wild-savanna-in-roblox-hack_GM431946152.pdfIn PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/free-gift-card-codes-2021-roblox_GM431946152.pdfIn PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/free-facs-roblox_GM431946152.pdfIn PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/roblox-apk-hack_GM431946152.pdfIn PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/how-to-hack-roblox-jailbreak-with-cmd-prompt_GM431946152.pdfIn PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/broward-county-roblox-free_GM431946152.pdfIn PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/roblox-yugioh-gx-world-cheats_GM431946152.pdfIn macro / runtime command snippet
- http://dev.pmrscambodia.org/images/uploadfiles/roblox-hack-game_GM431946152.pdfIn PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/free-paypal-accounts-with-money-for-roblox_GM431946152.pdfIn PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/how-many-free-spin-links-is-there-for-coin-master_GM406889139.pdfIn PDF document text
- http://dev.pmrscambodia.org/images/uploadfiles/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
- http://dev.pmrscambodia.org/imageIn macro / runtime command snippet
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_002_off000034a2.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x34A2	22660 bytes
SHA-256: `71c6123d1829b8bdcf75056e88a471b42ddac1170b413dad40512c67a762d556`
`font_01_sfnt_off0000675a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x675A	2896 bytes
SHA-256: `c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd`
`font_02_sfnt_off0000713f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x713F	18164 bytes
SHA-256: `c315ccf9a79b36be1a03c3aee76827ab51131b40fc24ac36c1cd3f6d313de72a`

Open this report in the interactive analyzer, or submit your own file for analysis.