Malicious PDF — malware analysis report

Static analysis result for SHA-256 c080581be2144a8f…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 19:31:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 300b1b11b33fc1381f2cdba59a4b09b3 SHA-1: 3695d32386140c7de3ae402dfbe16f16faabe668 SHA-256: c080581be2144a8f894c7cde1ba6fb030342a77ab0a70b324b63ee3dd9492074
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free in-game currency and hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or downloads. The document body and embedded URLs reinforce this theme, aiming to exploit user interest in popular games for malicious purposes.

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/406889139/free-coin-and-spin-in-coin-master-game-hack In PDF document text
    • http://perpustakaan.idia.ac.id/repository/pokemon-go-free-lucky-egg_GM1094591345.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/roblox-doomspire-brickbattle-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-rs-999-999-999-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-roblox-birthday-card-printable_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/roblox-printables-free_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_off00003033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3033 22980 bytes
SHA-256: f9e7f2251d9bafccdb0080e4f2080c69c01575909ff978fbd17addb7c75d4954
font_01_sfnt_off000063e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E5 18348 bytes
SHA-256: 6eeec23f3dc1a8fda715f091be12cf507421137203139fa633fe014a904a42c4

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