Malicious PDF — malware analysis report

Static analysis result for SHA-256 09fa5dabf19f89bc…

MALICIOUS

PDF

42.3 KB Created: 2021-05-15 14:36:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 2bb11ac53636770636cfe235a1d1246f SHA-1: 0b458a80b138533bb23b36fdd86b33d9cccdf08a SHA-256: 09fa5dabf19f89bc46dc88b17228bc0f68e41d55e3ddbcb84cccbbdbd736920c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including a known malicious redirector at `https://netcdn.xyz/app/406889139/coin-master-free-coins-2021-game-hack`. The document body and embedded links suggest a lure for game-related cheats or currency, aiming to direct users to potentially malicious content. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a phishing or scam attempt.

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/coin-master-free-coins-2021-game-hack In PDF document text
    • https://tpp.com.tw/image/data/files/roblox-free-printables_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/roblox-online-free_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/free-spin-coin-master-link-download_GM406889139.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.

FilenameKindSourceSize
stream_003_off00004b2f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B2F 24396 bytes
SHA-256: 35c70eb1950257f11331ca5dbb120bf4e5aa6f0f40373e7ee339cd083f8daa5b
font_01_sfnt_off00008341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8341 18112 bytes
SHA-256: d3290bf375094f68ca2c73f068de3958d05aa7629a05aa779b6fc584462feea2

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