Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e863c4d396f4af4…

MALICIOUS

PDF

35.4 KB Created: 2021-06-28 17:16:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 62d0cc2e6ebbd1a0a27e02ef4fdae58e SHA-1: ffd5e0f79bac03b481e28f38653f29653a32e812 SHA-256: 6e863c4d396f4af461c0a81f0626dfae9638b5e146e753db35903d9eb8ace663
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure, promising free in-game currency or hacks for games like Roblox. It contains embedded links that redirect to malicious infrastructure, specifically http://netcdn.co/app/431946152/how-to-get-free-robux-without-promo-codes-game-hack, which is flagged as a malicious redirector. The document's content and the presence of malicious links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful 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/how-to-get-free-robux-without-promo-codes-game-hack In PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/roblox-immortality-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/chara-undertale-for-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/roblox-money-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/how-to-get-admin-with-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/how-to-get-2021-robux-on-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/how-to-get-free-stuff-on-roblox-catalog-mobile_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/free-robux-secret-page_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/roblox-trade-hangout-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/roblox-hack-apk-mod-menu_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/free-animation-2021-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/roblox-free-star-wars_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/roblox-cheats-online_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/how-to-hack-vehical-sim-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-download-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/free-robux-no-offer-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/free-noclip-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/free-download-roblox-pc_GM431946152.pdfIn PDF document text
    • https://elearning.man2kotatangerang.sch.id/__statics/gudangsoal/files/adopt-me-roblox-hack-money_GM431946152.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_off00003132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3132 22256 bytes
SHA-256: 4851e7907e48a03ed36444ebd41ccd21e23e58860298d9b4cdb0e0f2725d3cb0
font_01_sfnt_off00006282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6282 20056 bytes
SHA-256: 1b49867deb453d35a1a14c496a839b5499235e5721133e3a586703aa3003dba4

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