PDF malware analysis — malicious · 9edbc139c028cb2d

MALICIOUS

PDF

34.4 KB Created: 2021-07-19 05:06:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 35b8fa5899deda835998fb23f4ece2a1 SHA-1: 53644079306ef13343170d970b7c6de6ad26796d SHA-256: 9edbc139c028cb2de26f7e6d5a49955d34372a388b88db609f7664ced306d1be

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to a known malicious infrastructure, specifically advertising free in-game currency generators. The document body and embedded links strongly suggest a lure for users seeking cheats or virtual currency, leading them to potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a phishing or scam attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9955

Heuristics 4

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.
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/free-robux-generator-no-survey-no-download-no-human-verification-game-hack In PDF document text
- https://abqyorkrite.org/images/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://abqyorkrite.org/images/how-to-get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
- https://abqyorkrite.org/images/free-robux-script_GM431946152.pdfIn PDF document text
- https://abqyorkrite.org/images/roblox-hack_GM431946152.pdfIn PDF document text
- https://abqyorkrite.org/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
- https://abqyorkrite.org/images/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
- https://abqyorkrite.org/images/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://abqyorkrite.org/images/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- https://abqyorkrite.org/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://abqyorkrite.org/images/coin-master-fan-page-free-spins_GM406889139.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_off00002bee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2BEE	22952 bytes
SHA-256: `002eb58f750eb5ff82ac383d33b8087180d270f77f3c3b4c89772fbac9014486`
`font_01_sfnt_off00005f67.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F67	19920 bytes
SHA-256: `0ee1dccafff2e2c75fdc772e8d4b8cf65e797f0dac54927d598bc057dd95cc07`

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