Malicious PDF — malware analysis report

Static analysis result for SHA-256 88513dfe576c57a6…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 05:51:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 8f8d9a9f7bba51cef7cf5d96111d7364 SHA-1: 949a9b955f50290eb30d30b50b87b05967bcaff7 SHA-256: 88513dfe576c57a65ae4b7e3c94bda623b84b33c23774e9c4dc1a000c16e808c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency or hacks, directing users to a known malicious redirector. The embedded URLs and document body content strongly suggest a phishing or scam attempt. Although no scripts were extracted, the PDF structure and linked URLs indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.tw/app/431946152/how-do-you-get-free-robux-without-doing-anything-game-hack In PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/thanos-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/connection-free-mail-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-fun-com-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/where-do-you-put-cheats-codes-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/make-robux-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/instant-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-roblox-bots_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-god-mode-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-devil_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/best-free-avatar-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-roblox-camps-uncopylocked_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-robux-generator-tool_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_off00002f3f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F3F 22104 bytes
SHA-256: a2386d0c5fb93ad79d1554e17a2bf9b71cf7336eb195b7c102c920c913f0a803
font_01_sfnt_off00006038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6038 19980 bytes
SHA-256: a10b86a95e1163526836e1939e7e424d9e0b635c08126f71a6a7b060d93e13a9

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