PDF malware analysis — malicious · 2f7274aa1c23c7bb

MALICIOUS

PDF

35.9 KB Created: 2021-07-04 12:44:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 365c8b63239e8765ff60038ccc61f170 SHA-1: fefcc985de527aa7ac388fc748b906f8640d83e0 SHA-256: 2f7274aa1c23c7bbe7434948e8abfb630e50a0f1fddfdafb1f18cf19d819426a

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links to redirector infrastructure and SEO-linked PDFs, all related to game hacks and free currency. The primary lure appears to be a 'free generator' for Coin Master, directing users to a malicious URL. The document's structure and content suggest it's part of a phishing or scam campaign designed to drive traffic to potentially malicious sites.

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.
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 http://netcdn.tw/app/406889139/free-coin-master-coins-and-spins-game-hack In PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/how-to-get-free-robux-by-doing-surveys_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/roblox-hack-unlimited-robux-generator_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/how-to-make-robux_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/roblox-full-throttle-money-hack_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/lucky-patcher-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/hack-money-granny-roblox-v3rmillion_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/free-obc-roblox-2021_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/hack-coin-master-site-rssingcom_GM406889139.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/roblox-variable-modifier-script-cheat_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
`font_00_sfnt_off00003447.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3447	23440 bytes
SHA-256: `cdf4d31f7f581a41a2da13b0f33de0fb4093f148e7a7891c0b6437397b0d7e3b`
`font_01_sfnt_off00006990.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6990	18348 bytes
SHA-256: `cc12283f691ecd9c6c4381c5355a15c3235cfa1ea9601b68c1f91d3883d88a7b`

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