Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a9dc039edd8efb7…

MALICIOUS

PDF

35.5 KB Created: 2021-06-28 03:49:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bc378867b28bf189ab77705479d95f72 SHA-1: d9c95243d4d4b3a79a2e56e0c8521fcd1a0e2d90 SHA-256: 8a9dc039edd8efb7e0fa9cfcb4b6dcf5e123d8b321311c7e130d632f3dac3326
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The document body and heuristics indicate a lure to download or access potentially unwanted or malicious content. While no scripts were explicitly extracted, the embedded URLs and the nature of the lure suggest a phishing or social engineering attack aimed at tricking users into visiting compromised sites.

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.co/app/431946152/free-roblox-dominus-november-2021-game-hack In PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-hack-roblox-royale-high_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-high-school-free-rhs-cash-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-money-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/dhow-do-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-hacked-pour-avoir-des-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-free-spins-cheat-codes_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-hack-someones-computer-through-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-without-phone-number_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-do-you-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-roblox-serverside_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-jailbreak-hack-noclip-zip-file_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-more_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/descargar-hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-speed-hack_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_off000030b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B5 22612 bytes
SHA-256: 0f9da25edd564b7e46dbf13f139683c1341066cdf4a4876bb6d60a4b51f8a863
font_01_sfnt_off00006354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6354 19856 bytes
SHA-256: b23638b5048b07d9d675a9fd26b016a263a72188877f74d39830f74a5a1829ed

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