Malicious PDF — malware analysis report

Static analysis result for SHA-256 046c3c9ec9c79426…

MALICIOUS

PDF

32.8 KB Created: 2021-07-04 01:16:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: b1246abcd4ac1554d65fc8a7b82517a2 SHA-1: 70da552145253f87dcfbf0dbb7d11283abc7d3b8 SHA-256: 046c3c9ec9c79426b0e804b703f1b929688e1b1427661d3e3151f22bf11f2a4b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "game hacks" and "free generators" for popular games. The primary lure URL is http://netcdn.tw/app/479516143/minecraft-free-ios-2021-game-hack, which is flagged as a malicious redirector. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites, likely leading to further malware downloads or credential harvesting.

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/minecraft-free-ios-2021-game-hack In PDF document text
    • http://simon-skov-fougt.dk/billeder/pubg-uc-voucher_GM1330123889.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/2-gunda-parte-del-hack-de-robux_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-spin-coin-master-app-download_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/roblox-hack-phantom-forces-2021_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-apk-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/bugmenot-roblox-hack_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/2021-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/knife-hack-for-assassin-roblox_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-roblox-money_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/best-free-robwhat-does-roblox-points-do-ox-clothes_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/como-hackear-coin-master-sin-verificacion-humana_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-robux-net_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/roblox-ragdoll-system-test-hack_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/roblox-forest-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_off00002e01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E01 21552 bytes
SHA-256: b4fb9fae2621290039a9c0af3f452b77b6d20acc2ac97ba529fcde871abf9da0
font_01_sfnt_off00005cfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFA 18400 bytes
SHA-256: 2bf844231399acc5cf711acb9faf8aedd609a9c8605d8b3f0076c20fc980fe80

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