Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1382f1b739c3ec4…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 07:37:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 724c19bbffd87e9f836f379ec9b18dc1 SHA-1: bfae19d667af4a51dc15c365e127b3fef8195b43 SHA-256: a1382f1b739c3ec433fc013f50ad6d2686a64f87380b7e89805f28215294737a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a phishing or scam attempt.

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/free-robux-2021-september-game-hack In PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/what-is-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/hacks-to-get-robux-in-tower-of-hell-may-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/rbx-world-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-trolling_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/rbx-hut_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-jailbreak-noclip-cheat-engine-script_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-martial-arts-bo-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/robux-free-von-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/lego-hacking-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-hack-roblox-jailbreak-2021-money_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/robux-code-2021-free-game_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-spin-link-for-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-get-free-pant-and-free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-hack-roblox-with-inspect-element-2021_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
font_00_sfnt_off00002f8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8A 22480 bytes
SHA-256: 2fa8c4e3a5e63662e0b61ea620fc0825745846d26fad827386a1c00a60d15eb7
font_01_sfnt_off000061dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DD 19472 bytes
SHA-256: ed33c7638fbcfaa2259344a60b0912e495113b08c70b0453ebc48b370c8aed60

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