Malicious PDF — malware analysis report

Static analysis result for SHA-256 30ad16ccad327837…

MALICIOUS

PDF

45.8 KB Created: 2021-06-09 03:19:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3303221eab5e57dc19d8f9b95c98f4ea SHA-1: 77d86f00d4c80d4965f899f3f5e53face334f47f SHA-256: 30ad16ccad327837c83225c1abbd59d33a4bf60de7d3f09c64dad439f1bada7f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links, including one identified as a malicious redirector, which leads to a lure about free game hacks. The presence of a download button lure and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/cute-things-to-wear-on-roblox-for-free-game-hack In PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-roblox_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-cheat-codes-pc_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-imagine_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-official-website_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-codes-generator_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_004_off0000533a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x533A 25380 bytes
SHA-256: 62b5dee11c20bf3a3f3ca5e2192980930e9fbfa5f6a1bebc79230d0b5e2735e4
font_01_sfnt_off00008e0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E0B 19192 bytes
SHA-256: aa2f7d8f2a375f34b62eaf426fe43ff0b44b7212a9061a1eab67ff8209a5aa2a

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