Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed17808b44efb64f…

MALICIOUS

PDF

33.5 KB Created: 2021-07-06 09:27:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d1db2493840970af6d4f2e68019a40fa SHA-1: 09a7c99251b76f12b4c4a54fcb714dfd762e6c83 SHA-256: ed17808b44efb64fb2ae526f4c190ea9f0fdab4e63118e88a276e25c85c82217
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising free game hacks and generators. The primary lure URL is http://netcdn.tw/app/479516143/optifine-pe-game-hack, which is designed to trick users into downloading potentially unwanted or malicious software. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/479516143/optifine-pe-game-hack In PDF document text
    • https://xiangquan.com.tw/image/data/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-let-them-remain-cheat_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/flame-gg-hack-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/gift-card-free-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-do-you-know-if-you-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/hack-robux-online_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/new-account-roblox-free_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/bad-busiiness-roblox-hack_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-roblox-promotion_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/money-hack-the-plaza-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/7aykw-duncan-free-robux-no-survey-human-verification_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002eb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB5 22472 bytes
SHA-256: 6302a1748f4fd2e6dfe20311203d25d4bdca0dddcaed829c2b96fef013e67b96
font_01_sfnt_off0000608c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x608C 18188 bytes
SHA-256: 106e92ccf0483d7e3d6814cb7b7d47902da7918aaf1cd4cd7bc423ce2a0c5fa3

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