Malicious PDF — malware analysis report

Static analysis result for SHA-256 dac5ea432ad9c8d5…

MALICIOUS

PDF

43.1 KB Created: 2021-05-10 13:57:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 112d0c8b9caf8433f12a6009510ca00f SHA-1: af7b09a5f8ad905cd4634e5534fc2b9068e9d281 SHA-256: dac5ea432ad9c8d562052a8032facc675ad24af25952ed9a6f9149c9dab1e0cd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that redirect to malicious infrastructure, specifically promoting game-related "hacks" or "generators". The ML classifier also flagged the PDF as malicious. The document body contains text and links that reinforce the lure of free in-game currency or items, aiming to trick users into clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9142

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/blogspot-coin-master-game-hack In PDF document text
    • http://jdlwealth.com/images/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://jdlwealth.com/images/how-to-get-robux_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/free-robux-mobile_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_003_off00003eb1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3EB1 25784 bytes
SHA-256: 0c3ebf69f8f3f0e52a24ea4bda65bd268cf74de28c57a6f3e63825649f5ad92e
font_01_sfnt_off00007b1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B1E 3460 bytes
SHA-256: 27f6ee24b80a0c45a340e32027a43d6c3a7853aac96563eed14d58819399f6a8
font_02_sfnt_off00008688.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8688 18300 bytes
SHA-256: 70576f8f42aad5e9047874363a3070dcdf9b24213dd74598ede00c9fec6f13a3

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