PDF malware analysis — malicious · 88da2d7dce238640

MALICIOUS

PDF

50.7 KB Created: 2021-05-17 19:22:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: f719720176d91041a73c103c9fa73608 SHA-1: cbfd1ee21ffadf5ffabe133b33287337e4639e90 SHA-256: 88da2d7dce238640ef7e78eb9504b2efb4365d7c962283100bd040da0f88c340

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are hosted on domains that appear to be part of a link farm. The document body and extracted URLs suggest a lure for game hacks and cheats, likely leading to phishing or malware downloads. The ML classifier also flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.8594

Heuristics 4

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
External URI info PDF_URI

PDF contains an external URL action
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.xyz/app/406889139/coin-master-free-spins-hack-iphone-game-hack PDF link annotation
- https://schulzpressetext.de/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
- https://schulzpressetext.de/images/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
- https://schulzpressetext.de/images/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
- https://schulzpressetext.de/images/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
- https://schulzpressetext.de/images/free-robux-working_GM431946152.pdfIn PDF document text
- https://schulzpressetext.de/images/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
- https://schulzpressetext.de/images/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
- https://schulzpressetext.de/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
- https://schulzpressetext.de/images/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
- https://schulzpressetext.de/images/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
- https://schulzpressetext.de/images/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
- https://schulzpressetext.de/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
- https://schulzpressetext.de/images/free-roblox-gift-card_GM431946152.pdfIn PDF document text
- https://schulzpressetext.de/images/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
- https://schulzpressetext.de/images/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
- https://schulzpressetext.de/images/best-hacked-client_GM479516143.pdfIn PDF document text
- https://schulzpressetext.de/images/oprewards-points-generator_GM431946152.pdfIn PDF document text
- https://schulzpressetext.de/images/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
- https://schulzpressetext.de/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://schulzpressetext.de/images/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off000048db.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x48DB	27304 bytes
SHA-256: `ff0b7339b25f00f3a465d2120d3bb349a1b88b3a5ae401ab19d1be673fc8ca49`
`font_01_sfnt_off00008873.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8873	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off00009220.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9220	7332 bytes
SHA-256: `d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d`
`font_03_sfnt_off0000a439.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA439	18220 bytes
SHA-256: `1dfaaa5fda009d523ba1163bf16545e2c66f7621c16cb7ff5e9bef64f998ba72`

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