Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0c6fed0f1e8bd45…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 19:02:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 6020a5a5bf8e1da8435650cfcc2bbeda SHA-1: ec37a28e0a259a2e827990799ecfc73796445947 SHA-256: e0c6fed0f1e8bd453e17251b881b3952ed209492dfe2728cfa1e3d78f63b95cf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and free generators. The primary lure URL is http://netcdn.tw/app/479516143/optifine-minecraft-pe-game-hack, which is associated with malicious redirector infrastructure. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting 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.tw/app/479516143/optifine-minecraft-pe-game-hack In PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-hack-rich-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-free-spins-cheat-codes_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/pubg-uc-voucher-code_GM1330123889.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/cm-daily-spins_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/hot-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/dungeon-quest-roblox-hack-ability_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-coins-free_GM406889139.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_off00002fc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC1 22900 bytes
SHA-256: 1b2559080263bc534f4678650d56794d75a95ca5481a9a50382af747a4fa8dd1
font_01_sfnt_off0000630b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630B 18188 bytes
SHA-256: 3fd1f4e1f014c6cb99be7ebfb89482957402c70290dbb2ac9db7368c9e50fcd2

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