PDF malware analysis — malicious · cffdcbacda0f663d

MALICIOUS

PDF

42.3 KB Created: 2021-05-13 22:32:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16

MD5: fd7613f5ceb1cd48df1419032f4c2ef0 SHA-1: cce26907a291f68b731f756831257cff12f9e397 SHA-256: cffdcbacda0f663deee4c38ed2fc564999298e5d880f7e61ea5415494ca0303f

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically targeting users with lures related to game hacks and generators. The primary redirector URL is https://netcdn.xyz/app/406889139/http-coin-master-hack-club-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or scam campaign designed to lead users to potentially malicious websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/http-coin-master-hack-club-game-hack In PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/roblox-people-girl_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/robux-hack-generator_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/roblox-lawsuit_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/coin-master-link-today_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/robux-today_GM431946152.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_003_off00004c74.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C74	23972 bytes
SHA-256: `13e3cc6bf46b4190003a7c45c8d3b3b62d99ecc912e8030b0179f5bbc94256a0`
`font_01_sfnt_off0000830c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x830C	18264 bytes
SHA-256: `96dcf9cab8c9fb238960f977a2b624e306cfdaf9711145744c5654b062c5866a`

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