Malicious PDF — malware analysis report

Static analysis result for SHA-256 22fae38d3079467f…

MALICIOUS

PDF

45.9 KB Created: 2021-04-23 05:31:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 3108b197960c07ea52ea60eb7d8efd1b SHA-1: a7230804c12aeafccc513e8ab32024182a1b8e63 SHA-256: 22fae38d3079467fd3aec05659a3246b0b082bad0899df0746601246428753f9
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and text lures related to 'free Robux' and game hacks, indicating a phishing or scam attempt. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly suggests this malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score point towards a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9776

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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://netsecure.pro/app/431946152/how-get-free-robux-no-scam-no-survey-game-hack PDF link annotation
    • http://damvallei.be/images/free-robux-adder.pdfIn PDF document text
    • http://damvallei.be/images/cbro-hacks-roblox-2021.pdfIn PDF document text
    • http://damvallei.be/images/good-looking-free-avatars-roblox.pdfIn PDF document text
    • http://damvallei.be/images/robux-gratuits-rapidement-cheat-pc.pdfIn PDF document text
    • http://damvallei.be/images/hackeando-ordenadores-en-roblox.pdfIn PDF document text
    • http://damvallei.be/images/how-to-hack-epic-minigames-wins-roblox.pdfIn PDF document text
    • http://damvallei.be/images/roblox-2021-robux-hack.pdfIn PDF document text
    • http://damvallei.be/images/hexus-roblox-exploit-free.pdfIn PDF document text
    • http://damvallei.be/images/how-to-get-free-robux-using-promo-codes-2021.pdfIn PDF document text
    • http://damvallei.be/images/free-roblox-apk.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_003_off000040d2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x40D2 29044 bytes
SHA-256: 30db84e875c34518c43b467da9bb74a5ee4240387125321be0cc46df0f38b974
font_01_sfnt_off000082a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A4 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00008f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F4B 19064 bytes
SHA-256: 75ee409105a2d673b722d510bb9dbf451c9de4850aeedc8f4003166134fd383e

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