PDF malware analysis — malicious · 5a610f5bd0c3ee41

MALICIOUS

PDF

45.5 KB Created: 2021-05-13 04:00:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27

MD5: dbcc0c8e7f3a928985e60113a1b967b5 SHA-1: eb17847b8db3cf123cf427d383e3f61b4b6b0078 SHA-256: 5a610f5bd0c3ee41258e8fb9b19a08b9678251b6be9a11b417d00aa3bdf9acda

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to lure users into clicking on what appear to be game hack generators, with one primary redirector URL identified. The document body and heuristics indicate a scam or phishing attempt leveraging popular game themes to drive traffic to potentially malicious sites. No scripts were extracted, but the PDF structure and embedded links are indicative of a malicious lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9507

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.
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
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-online-hack-download-game-hack In PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/minecraft-free-exe_GM479516143.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/how-to-get-more-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/coin-master-attack-hack_GM406889139.pdfIn PDF document text
- https://kitchenset-jogja.com/ckfinder/userfiles/files/coin-blogspot_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_003_off00004d50.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D50	24956 bytes
SHA-256: `4f1dddf460b468e5a1ac428de64957a47c3e42586891d0b60405faff7458a1a4`
`font_01_sfnt_off0000854b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x854B	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off00008efd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8EFD	18296 bytes
SHA-256: `a91dad97805a851d4d9dd61317d1e51430e69d3f7e26ebf67d6b1ffe25e57ed6`

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