Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb1a4d6badde4ba9…

MALICIOUS

PDF

44.4 KB Created: 2021-05-14 23:22:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d1ecdf64424e122b4262576c0457a86d SHA-1: ca1d2f39f027fa4578b57a3be1406012bef39cf7 SHA-256: bb1a4d6badde4ba95e2d6bceb0719c2398bf48709cb2da29411becfe3c0d303b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free Robux' or 'game hacks'. The document body and heuristics confirm the lure is related to obtaining in-game currency or cheats. While no scripts were directly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

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 https://netcdn.xyz/app/431946152/how-to-get-free-robux-without-verifying-2021-game-hack In PDF document text
    • http://demenagementlandry.com/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/robux-match_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/claimrobux-net_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://demenagementlandry.com/images/coin-master-free-spin-links-december-30-2021_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/roblox-hax_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • https://collectrobuxIn 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
stream_003_off000049d3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49D3 26500 bytes
SHA-256: 5885ffba966541544b675a4c5461f301b866f8aa7608109d3b8a2e19aa63ea98
font_01_sfnt_off000086cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86CF 19772 bytes
SHA-256: 854662d4ed02eaea1b0a0020fc7ac25fa5b331288bf96b43491be4028b138ed1

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