Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb054e39a98cf7d0…

MALICIOUS

PDF

34.4 KB Created: 2021-07-01 19:02:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: c0607e8ce0c0d250e3130c5ac398f215 SHA-1: 87c14932a367e365347ce3ad372cf21f0933a70d SHA-256: cb054e39a98cf7d0e939e30811ca55b7fcbc1d8eda8d97eeb8d4e3a38caed322
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, masquerading as game hacks and generators. The heuristic firings indicate a malicious redirector and a lure for game-related cheats. The document body, though partially corrupted, contains URLs that reinforce this malicious redirection pattern.

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/roblox-bird-hack-game-hack In PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/get-knife-hack-in-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-free-wings-gear_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/grabpoints-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-robux-for-ads_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/hacks-para-roblox-2021-booga-booga_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/hackear-coin-master-android_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-is-hacker_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-free-robux-2021-easy-on-ipad_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/hacks-para-roblox-2021_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/flamegg-free-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/what-is-the-app-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-free-spins-uk_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/roblox-hack-apk_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_off00002e01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E01 22964 bytes
SHA-256: 73649e5c58a07b75ecf98805107821a4399d78af2db9aedf6459d6c3f11cfd12
font_01_sfnt_off00006194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6194 18952 bytes
SHA-256: a8b3d6cef45caba8fd703e2dbbf1f9652c48d0de488028b1223ce58dabd11bc9

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