Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe6ffb006b856d2b…

MALICIOUS

PDF

44.6 KB Created: 2021-05-13 16:42:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 94d24a5f7b62b730d64434117afc7412 SHA-1: 7ae2eebdb3b3f2beda821e797be991c065c7f7de SHA-256: fe6ffb006b856d2b1fd8fecb4eb5c3abfff34cb44606cda984766e26f161b297
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as 'free generators' or 'game hacks'. The primary lure is for 'free Robux', a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious redirector chain designed to lead users to potentially harmful content or further exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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-surveys-game-hack In PDF document text
    • https://www.audev.com/images/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://audev.com/images/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://audev.com/images/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://audev.com/images/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • https://audev.com/images/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • https://audev.com/images/coin-master-levels_GM406889139.pdfIn PDF document text
    • https://audev.com/images/cpbildco-robux_GM431946152.pdfIn PDF document text
    • https://audev.com/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://audev.com/images/real-coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://audev.com/images/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • https://www.audev.com/images/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • https://audev.com/images/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://audev.com/images/2021-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://audev.com/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://audev.com/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://audev.com/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://audev.com/images/free-robux-safe_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_off000047a7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47A7 24452 bytes
SHA-256: 1d8d792eac23ac8a2e923fc7c807c3405e8e55ea5fec3ed82d276c692b5b9947
font_01_sfnt_off00007f97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F97 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8949 19060 bytes
SHA-256: 402aebe8c34fdbdb56c6d5ac0c879f316ccc47677bd032b34ef61ae0ac5a4f59

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