Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dbd99036af11dde…

MALICIOUS

PDF

35.8 KB Created: 2021-07-03 23:39:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 212ae3f82d80fa6d95b296e4e1723048 SHA-1: 8b23b9ac8a1f491acb1561dd53bcbaeec5ba8d80 SHA-256: 3dbd99036af11ddec4b086ded3719e77473051085ec9959d3f70fa1075520938
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure of game hacks and cheats to entice users into clicking embedded links. These links redirect to known malicious infrastructure, indicating a phishing or malware distribution attempt. The ML classifier strongly supports the malicious nature of this PDF, and the presence of multiple redirector links further solidifies this assessment.

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/coin-master-hack-pc-download-game-hack In PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/cheat-codes-for-bank-tycoon-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/best-gear-free-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/hack-my-game-xyz-coin-master_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/hack-todos-los-coches-pacifico-2-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/pokemon-go-free-602_GM1094591345.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/instant-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/legit-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-console-hacks_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/avoir-pleins-dhabit-dans-roblox-sans-hack_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
stream_002_off000032bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32BC 23508 bytes
SHA-256: 8dd82a4350decc03f167cba46c77ea4733cf36eb00cb7246a15719b8c4eab4b4
font_01_sfnt_off0000681d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x681D 18740 bytes
SHA-256: ec209e4fbf756c28229d1b0108db9d9c245e7b3fbba1f03aba422a7f1fbc8602

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