PDF malware analysis — malicious · eed2939e52058a9f

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 15:26:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12

MD5: b4aafa2c2ed8fd73e8e291ed707b7a2c SHA-1: 97cdcd32130cf2916ea4da7cd0f3dc00894b121f SHA-256: eed2939e52058a9f8af4d99d0fa15a92002a8431b60b755dd19a472941ba4ecd

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains multiple links to known malicious redirector infrastructure, specifically promoting game hacks and cheats for popular games like Coin Master and Roblox. The document body and embedded links suggest a lure to download further malicious content or exploit-related files. The ML classifier strongly indicates maliciousness, and the presence of numerous external links points towards a link farm or redirection scheme.

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.tw/app/406889139/coin-master-free-gifts-game-hack In PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/how-to-hack-someones-roblox-account-with-link_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/roblox-super-hero-life-cheats_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/how-to-get-free-clothes-on-roblox-mobile_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/apps-that-get-you-free-robux_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/free-robux-exe_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/robux-hack-script-2021_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/roblox-ios-cheats_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/how-to-get-free-tix-on-roblox-2021_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/robux-com-roblox_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/how-to-hightspeed-roblox-with-cheat-engine-torso_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/roblox-jailbreak-speedhack-cheat-engine_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/how-to-hack-bots-roblox_GM431946152.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_off00003400.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3400	23028 bytes
SHA-256: `98934e6de6df750af26c5ef44bcac9c993262f12319be15883fb72b9bd542576`
`font_01_sfnt_off000067bd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67BD	17996 bytes
SHA-256: `0554876b2ab95b57b2a8903cbabfbfa90e4f9f04422ab63317bc25d957b52972`

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