Malicious PDF — malware analysis report

Static analysis result for SHA-256 1637b87319b75a70…

MALICIOUS

PDF

42.1 KB Created: 2021-05-13 02:31:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e995583d5545b9d2296c79a13fd936c5 SHA-1: cb86f7454d2a45ceeefebf16c3369d5d3d85497f SHA-256: 1637b87319b75a70547a6c38f13b0e2c744e8a183d231d88740e35dce6756645
220 Risk Score

Malware Insights

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

This PDF document employs a lure related to game hacks and free currency, aiming to trick users into clicking malicious links. The document contains multiple links to known malicious redirectors and specifically requests sensitive recovery secrets, indicating a phishing or credential harvesting attempt. The embedded URLs likely serve to download and execute further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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 https://netcdn.xyz/app/406889139/how-can-i-get-free-coinsn-coin-master-game-hack In PDF document text
    • http://optiquedelavaunage.com/images/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-hack-software-download_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coinmaster-spin-ml_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-robux-for-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
stream_003_off00004a07.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A07 25760 bytes
SHA-256: e7cb7417b19e5640f82843c876a3a247260aa64620df0372d37bbd81d3b5f410
font_01_sfnt_off000083a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A7 17872 bytes
SHA-256: 7acb2ea7ca48292ff84e38b925b00f57c40a05e644be1ec1a4eb48c7cb3542c1

Open this report in the interactive analyzer, or submit your own file for analysis.