PDF malware analysis — malicious · 46bc6434695e8936

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 10:41:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16

MD5: e95acdb91371524f947db14425b91491 SHA-1: f3f7e068dca0b38d996025154daa3053073907d3 SHA-256: 46bc6434695e8936fd38ac1a5c86b1db0bcb420ef73805044d4d29fc15b391cb

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links designed to lure users into clicking on potentially malicious content, such as game hacks and generators. The primary link, http://netcdn.tw/app/431946152/cute-free-hair-on-roblox-game-hack, is identified as a malicious redirector. The document body and embedded links suggest a social engineering tactic to drive traffic to these sites, likely for further malware delivery or phishing.

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/431946152/cute-free-hair-on-roblox-game-hack In PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/roblox-world-free-to-use_GM431946152.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/robux-link_GM431946152.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/como-tener-robux-gratis-en-roblox-2021-sin-hack_GM431946152.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-in-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/blox-land-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/dreadguard-roblox-hacks_GM431946152.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/coin-master-hack-online-download_GM406889139.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/robux-hack-generator_GM431946152.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/irobux-com-redeem_GM431946152.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-roblox-rigs_GM431946152.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/mediafre-download-roblox-hack_GM431946152.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/robux-generator-2021-free_GM431946152.pdfIn PDF document text
- https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/can-you-use-cheat-engine-in-2021-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_off000031c1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31C1	22284 bytes
SHA-256: `5116a7174479ab4da68ef037e41cca2acd90dd95a2ddc0be707247c47229b3f2`
`font_01_sfnt_off00006335.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6335	19012 bytes
SHA-256: `7f39dcfd0d6ad0566306e41e142fba4867ac24162cfe9690926b2c82680c74b8`

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