PDF malware analysis — malicious · e56463435c34f620

MALICIOUS

PDF

36.0 KB Created: 2021-07-05 23:07:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26

MD5: d333165f0d159b39620c106e470e8cad SHA-1: 5638c6f45c9a89f860fbb3817a144b49528b2f46 SHA-256: e56463435c34f62054f482648ff8405087276e3a79adc0b65256493e248556ed

180 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, including one identified as a malicious redirector, pointing to sites offering game hacks and free accounts. The document body and heuristics suggest a lure for phishing or potentially downloading further malicious content. While no scripts were explicitly extracted, the nature of the links and the 'ML_NYX_PDF_MALICIOUS' heuristic indicate a high likelihood of malicious intent.

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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-cards-and-spin-link-game-hack In PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/free-robux-hack_GM431946152.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/roblox-robux-hack-no-download-or-survey_GM431946152.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/legit-free-robux-generator_GM431946152.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/where-tiktok-free-views-app_GM835599320.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/free-roblox-cards-not-used-2021_GM431946152.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/codes-that-people-think-your-a-hacker-roblox_GM431946152.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/free-glitch-murder-mystery-free-knifes-roblox_GM431946152.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/how-to-hack-a-roblox-server-2021_GM431946152.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/coin-master-free-link_GM406889139.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/get-free-robux-now_GM431946152.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
- http://www.visionledindia.com/uploaded_files/userfiles/files/legit-free-spins-coin-master_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_off00003528.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3528	23280 bytes
SHA-256: `d80c0df953c1bd0a3bb1f6454deb0204b2cbabeb7caafb33f7813cfc78b5572c`
`font_01_sfnt_off0000699d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x699D	18520 bytes
SHA-256: `2d84757a0f06ba780a4275559a9f7e18894832e041edd3a02a41347223991a26`

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