PDF malware analysis — malicious · 8d7454d4953080b8

MALICIOUS

PDF

49.8 KB Created: 2021-06-03 18:26:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16

MD5: a2850589e9756f5c61d6d3ada9560754 SHA-1: 58af775d554da84a0649c1af9f84e4258b397de2 SHA-256: 8d7454d4953080b854dd982e967230c3a015d08e11e16eb84a364663c29f809e

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a link disguised as a game hack generator, which is a common lure for phishing or malware distribution. The heuristic firings indicate that the PDF links to known malicious redirector infrastructure and presents a fake CAPTCHA to trick users. While no scripts were directly extracted, the nature of the lure suggests an attempt to lead the user to a malicious site that may exploit vulnerabilities or deliver a payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

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.
Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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 https://netcdn.online/app/431946152/roblox-theme-park-tycoon-2-money-hack-script-pastebin-game-hack In PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/coin-master-60-spins_GM406889139.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/free-coin-master-links_GM406889139.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/code-free-robux_GM431946152.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/moonactive-free-spins_GM406889139.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/minecraft-wurst_GM479516143.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/como-hacer-trucos-para-hackear-a-la-gente-en-roblox_GM431946152.pdfIn PDF document text
- https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
- 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_004_off0000535e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x535E	25568 bytes
SHA-256: `23bbbbc536081b93f7214e7a2378dcfb8e400c8b147615c0a391c8df0a00788a`
`font_01_sfnt_off00008edc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8EDC	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_02_sfnt_off00009bed.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9BED	19660 bytes
SHA-256: `9066c1743f79427c8ce067b43c18b85e1b127d13a6fc21b52327b81fca8c288f`

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