Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aff3d2e46fe6472…

MALICIOUS

PDF

33.9 KB Created: 2021-07-06 14:18:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 83a4efb5da1b4c5e6a4bebfc0401bb23 SHA-1: 1222726286b9cd3b830e3ed3b732796ef1182d29 SHA-256: 9aff3d2e46fe647205565782a0075b6c54627a931e21bc9926c9305d18eb0d79
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure for free game currency and hacks, directing users to malicious redirectors. The document body and heuristics indicate a phishing attempt, likely to deliver malware or lead to further malicious sites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/get-free-robux-2021-game-hack In PDF document text
    • http://itc-nekretnine.hr/files/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/easy-ways-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/how-to-hack-roblox-mobile-ios_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/hacking-on-mano-county-roblox_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/guuudd-info-roblox-hack_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/roblox-bee-swarm-simulator-tickets-locations-free_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/hacker-avatar-roblox_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/mcpe-download_GM479516143.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/how-to-get-free-robux-legit-no-survey-or-scam_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/coin-master-facebook-hack_GM406889139.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_off00002e35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E35 21964 bytes
SHA-256: 78c16b9797fb82845e11ee16f5873f7ef1e466169c4fb2bb284acf042f3bdb47
font_01_sfnt_off00005ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC3 19224 bytes
SHA-256: 821bcaeb5baca65cbb25255ca6205972482cf4d6c0082e9a42268983cc7c06a1

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