PDF malware analysis — malicious · 2c3e01cc5e921367

MALICIOUS

PDF

36.2 KB Created: 2021-07-01 20:52:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23

MD5: 166d7e96cca605e3015f41ccdaf3a2f9 SHA-1: 3481198543d0981f76b3df974cfdc4fa862ea2ff SHA-256: 2c3e01cc5e921367a896d94aa0c75bba1f7696f7a5be255a4635b2cd70aace18

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on what appear to be free game generators or hacks. The primary link directs to a known malicious redirector, and the document also hosts a large number of other PDF files, likely part of a link farm. The presence of these lures and malicious infrastructure indicates an attempt to drive traffic to potentially harmful sites.

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/hot-get-free-robux-game-hack In PDF document text
- https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
- https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
- http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-robux-generator-online-no-survey-no-download_GM431946152.pdfIn PDF document text
- http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/roblox-rewards_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
- http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/roblox-mod-apk-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
- http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/coin-master-free-spins-reddit_GM406889139.pdfIn PDF document text
- http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
- http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/how-do-you-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/where-tiktok-free-views-app_GM835599320.pdfIn PDF document text
- http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/coin-master-mod_GM406889139.pdfIn PDF document text
- http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-robux-hack_GM431946152.pdfIn PDF document text
- http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
- http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
- http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/minecraft-hacked-apk_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_off00003539.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3539	23096 bytes
SHA-256: `a3004d7d0d65954f51c0b663e0d986090f09cf4ef4b184f7e13f55a926584a50`
`font_01_sfnt_off0000690b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x690B	18820 bytes
SHA-256: `c004a72408bdcf24b3004698a2b86db1cf2d1724dd6eebf07e9eedcc32cc9d87`

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