Malicious PDF — malware analysis report

Static analysis result for SHA-256 dde013fa4f8880a5…

MALICIOUS

PDF

37.6 KB Created: 2021-05-20 13:01:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1c3b310b0c106cba1dc907c09a1db6a5 SHA-1: 7cfe03dc4bf6e8a8ba2c6250f3757b10532f7642 SHA-256: dde013fa4f8880a56f3752c8ff516db4aca0b98ab070194ab7fce37578cc9e87
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free Robux' or 'game hacks' to lure users. The document body and embedded artifacts suggest an attempt to disguise malicious links within a seemingly harmless document. The primary malicious URL identified is https://netcdn.xyz/app/431946152/roblox-free-robux-hack-game-hack, which is part of a larger redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/roblox-free-robux-hack-game-hack In PDF document text
    • https://lobergetart.se/images/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://lobergetart.se/images/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://lobergetart.se/images/roblox-ban_GM431946152.pdfIn PDF document text
    • https://lobergetart.se/images/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lobergetart.se/images/uprobuxcom-free-robux_GM431946152.pdfIn 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_002_off0000333d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x333D 26380 bytes
SHA-256: 27e6f4331aed3d10730468f7670c9be6c1a0c106a16c9bc1b17259971bf7fc8f
font_01_sfnt_off0000714d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x714D 18488 bytes
SHA-256: 44072fbb5c45a7604268a2c6438126b7db3492802a9c8847ecb07522db400813

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