Malicious PDF — malware analysis report

Static analysis result for SHA-256 088c20a35258c3a8…

MALICIOUS

PDF

37.6 KB Created: 2021-06-27 16:24:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: a8fec15bd829df55dce82d4f3e40364f SHA-1: f16edc886f873fc5ad9672aa96b80ffdd5c915e2 SHA-256: 088c20a35258c3a864b927dc39c21b999e02dc37d373303feed05f2447c772b5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are flagged as malicious redirectors, specifically promoting game hacks and free in-game currency. The document body and embedded links suggest a lure to trick users into visiting these sites, which likely serve as a gateway to further malicious content or scams. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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 http://netcdn.co/app/431946152/robuxmaniac-how-to-get-free-robux-game-hack In PDF document text
    • https://www.contabilidadesomma.com.br/images/how-to-become-a-roblox-admin-for-free_GM431946152.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/coin-master-spin-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/hacks-for-pet-sim-roblox_GM431946152.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/minecraft-maps-pe-free-download_GM479516143.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://www.contabilidadesomma.com.br/images/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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
font_00_sfnt_off00003b56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B56 22476 bytes
SHA-256: 97e02d0f7491c5725504db4078b4c19699d227638d64d6c57667770846db11bb
font_01_sfnt_off00006d2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2F 19364 bytes
SHA-256: ab15b4c3cb6ea05b81d0c7c348938f642f54c026f1b436322b9239b75a4dad26

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