Malicious PDF — malware analysis report

Static analysis result for SHA-256 08e9b3d09c8e1cb3…

MALICIOUS

PDF

49.3 KB Created: 2021-06-06 23:57:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: dd8700fea3d3ee8b17258ba74be2ae12 SHA-1: 372046059cc7795221f24fd196e5a38e7dc67ad8 SHA-256: 08e9b3d09c8e1cb35ba753a6a3a8fd1457b6d6a0a4c3ced4c1400cf93464d287
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them, promising free game currency or hacks. The primary link directs to a known malicious redirector infrastructure. The document body and heuristics indicate a scam or phishing attempt, likely to lead to further malicious content or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/free-robux-ganes-that-will-hack-your-account-game-hack In PDF document text
    • http://sv-nahetal.de/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/coin-master-free-spin-group_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://sv-nahetal.de/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/hack-for-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://sv-nahetal.de/images/roblox-adopt-me-hacks-2021_GM431946152.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.

FilenameKindSourceSize
stream_004_off00005278.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5278 25712 bytes
SHA-256: 0d9b5ac84a660c61cab678daa89aa4154919d799777a5b61f97dc4f08b4e63b8
font_01_sfnt_off00008e4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E4D 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009b5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B5F 19236 bytes
SHA-256: 484e83c8e254a11a3fae9804f3b7feaa85a881cfe19d3b2dfbed4b4304e96af9

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