Malicious PDF — malware analysis report

Static analysis result for SHA-256 943f9d41e5d28553…

MALICIOUS

PDF

42.7 KB Created: 2021-05-13 08:05:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 893c5baf67935d8de862752b97d28e9b SHA-1: 09347a8c708500a3e447e73387996b7e9cfd92b0 SHA-256: 943f9d41e5d285531821a4583c2866dfb131d82fe7a643bda115ef0645516532
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with 'game hack' content, aiming to trick them into downloading a payload. The heuristic firings indicate the PDF is designed to redirect users to malicious infrastructure, likely for a phishing or malware distribution campaign. No scripts were extracted, but the document body and heuristics strongly suggest a malicious redirection workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-hack-ios-game-hack In PDF document text
    • http://maxvanberchem.org/images/play-coin-master_GM406889139.pdfIn PDF document text
    • http://maxvanberchem.org/images/free-attacks-coin-master_GM406889139.pdfIn PDF document text
    • http://maxvanberchem.org/images/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://maxvanberchem.org/images/roblox-skin-free_GM431946152.pdfIn PDF document text
    • http://maxvanberchem.org/images/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • http://maxvanberchem.org/images/get-more-robux_GM431946152.pdfIn PDF document text
    • http://maxvanberchem.org/images/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • http://maxvanberchem.org/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://maxvanberchem.org/images/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • http://maxvanberchem.org/images/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://maxvanberchem.org/images/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://maxvanberchem.org/images/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://maxvanberchem.org/images/free-download-coin-master_GM406889139.pdfIn PDF document text
    • http://maxvanberchem.org/images/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://maxvanberchem.org/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://maxvanberchem.org/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://maxvanberchem.org/images/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://maxvanberchem.org/images/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://maxvanberchem.org/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://maxvanberchem.org/images/how-do-you-get-free-robux-on-roblox_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_off00004cd9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CD9 24928 bytes
SHA-256: 3ca15c127ded6f935164f084e9df3cba4874c649a4ac64379f298dde9b0953db
font_01_sfnt_off00008610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8610 17716 bytes
SHA-256: f14a452be4bd6a27c97c5694f50181d046bde25c51ddd7c6d3828a8a13811213

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