Malicious PDF — malware analysis report

Static analysis result for SHA-256 aba2c2b79a09d95f…

MALICIOUS

PDF

43.2 KB Created: 2021-05-14 01:52:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 638d88ff600cc161512cfa85399385c1 SHA-1: 6648bf5664ca8aad198a85338e5aecc1064e97d3 SHA-256: aba2c2b79a09d95f720211977e301104f81bb161599e0d81fdd17f3dbb5673c1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites that are flagged as malicious redirectors, specifically promoting 'free generator' or 'game hack' lures. The document body, though heavily obfuscated, contains text related to free Robux generators, reinforcing the lure. The presence of embedded URLs and the critical heuristic firings strongly indicate a phishing or scam attempt designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/free-robux-generator-2021-no-human-verification-or-survey-game-hack In PDF document text
    • http://brusivojimi.com/images/coin-free-master_GM406889139.pdfIn PDF document text
    • http://brusivojimi.com/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://brusivojimi.com/images/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://brusivojimi.com/images/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://brusivojimi.com/images/robux-come_GM431946152.pdfIn PDF document text
    • http://brusivojimi.com/images/woman-roblox_GM431946152.pdfIn PDF document text
    • http://brusivojimi.com/images/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://brusivojimi.com/images/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://brusivojimi.com/images/roblox-free-body_GM431946152.pdfIn PDF document text
    • http://brusivojimi.com/images/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://brusivojimi.com/images/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://brusivojimi.com/images/coin-master-free-spins-link-2021-march_GM406889139.pdfIn PDF document text
    • http://brusivojimi.com/images/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://brusivojimi.com/images/coin-master-2021-free-spins-link_GM406889139.pdfIn PDF document text
    • http://brusivojimi.com/images/free-robux-now_GM431946152.pdfIn PDF document text
    • http://brusivojimi.com/images/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://brusivojimi.com/images/coin-master-redeem-code-free_GM406889139.pdfIn PDF document text
    • http://brusivojimi.com/images/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • http://brusivojimi.com/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://brusivojimi.com/images/free-robux-giveaway-live_GM431946152.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_off000048aa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48AA 25024 bytes
SHA-256: 8a1c54a678d4d8684ebe55a9e88751645e8d3af66edfbb4ec7483a0f8253038e
font_01_sfnt_off000082b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B6 19556 bytes
SHA-256: 76adbda1d3e57e3064df3e292cf485a94c26c1a96e5d3a4e3c484cd1a4e129d0

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