PDF malware analysis — malicious · 90f92e6755ce3a15

MALICIOUS

PDF

35.8 KB Created: 2021-07-05 20:11:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20

MD5: fa6c325a26f1e06e3350e53cd528f46a SHA-1: 3ee21a01d1fd187358386698f29e5e531d285149 SHA-256: 90f92e6755ce3a15e6abcd836397ae98e75756d3469dfdc106703af58c78df47

180 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a document body that explicitly advertises 'Coin Master Hack Spins Apk'. Heuristics indicate that the primary URL, http://netcdn.tw/app/406889139/coin-master-hack-spins-apk-game-hack, is a known malicious redirector. The document's content and structure strongly suggest a phishing or scam attempt designed to lure users into clicking malicious links, likely leading to further malware downloads or credential harvesting.

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-hack-spins-apk-game-hack In PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/hack-killer-for-new-superhero-simulator-roblox_GM431946152.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/promo-code-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/tiradas-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/how-to-be-a-roblox-hacker-and-hack-accounts_GM431946152.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-bacon-outfit-roblox_GM431946152.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/what-to-do-if-you-get-hacked-on-roblox_GM431946152.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-robux-no-verification-no-download-no-survey-2021_GM431946152.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-70-spin-link_GM406889139.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/april-roblox-roghoul-script-hack_GM431946152.pdfIn PDF document text
- https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/cone-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
`stream_002_off00003376.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3376	23864 bytes
SHA-256: `a06c77d422f33dda2d9a2c6169270d9fc24f05ceb1fcfb8d9fbab68c78706223`
`font_01_sfnt_off000069b0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x69B0	18180 bytes
SHA-256: `1e953b72540ec4677b5f3a09436cf02581c7252e246dbe5ac414cafa51ba2d5d`

Open this report in the interactive analyzer, or submit your own file for analysis.