Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6e682a0eed51453…

MALICIOUS

PDF

45.9 KB Created: 2021-06-03 11:44:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: d3ee2fc7f06cb14407e685b1d6196fa3 SHA-1: 5d94deaa89e2ff55d81b71cca3607b801a05c5eb SHA-256: a6e682a0eed51453e06fe42046909b6782c9a4f7d9c133ba2c132b8a10e4b00a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them, ostensibly for game hacks or currency. One primary link, https://netcdn.online/app/431946152/how-to-get-more-robux-for-free-game-hack, is identified as malicious redirector infrastructure. The document body, though partially corrupted, also contains this URL, reinforcing the malicious intent. No scripts were extracted, but the embedded links and the heuristic firings strongly indicate 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.online/app/431946152/how-to-get-more-robux-for-free-game-hack In PDF document text
    • https://library.sman1berau.sch.id/repository/hack-a-game_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-verification_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000514b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x514B 27784 bytes
SHA-256: dcf20826f1c7926b39ed1db157858b5fc97d21334e289fd99a5fd3d86a2ec97a
font_01_sfnt_off0000902a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x902A 18480 bytes
SHA-256: 444f48c68388f928a3d871611d0873030738946ead4f6691d00c6869f71b1127

Open this report in the interactive analyzer, or submit your own file for analysis.