Malicious PDF — malware analysis report

Static analysis result for SHA-256 653573759ca4902c…

MALICIOUS

PDF

45.2 KB Created: 2021-05-13 16:33:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: d899f508bd0185b0756ab008068a0ca5 SHA-1: 6d0e057fbb5814dde174399e7096ea1c567c2792 SHA-256: 653573759ca4902cc4786c11e2d180d7473e01b7a2a4619e812f3c514cdc1067
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free spins' for popular games. The document body and embedded URLs indicate a lure to download or access potentially unwanted or malicious content. The presence of multiple redirector links strongly suggests a malicious intent to funnel users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/pig-master-coin-master-free-spin-game-hack In PDF document text
    • http://beagles-of-harmony.de/images/coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/hack-crack-for-coin-master-currency_GM406889139.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/coin-master-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/minecraft-tools_GM479516143.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/coin-master-free-online_GM406889139.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048e7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48E7 24844 bytes
SHA-256: 93374d32c37fbb202315bb0f93e8cf0131efe16c011048e8653d1d05036c9445
font_01_sfnt_off00008297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8297 3440 bytes
SHA-256: 07d7dedeae459255b1281190e76adc4d0aecbd031be634f703e34f8a7ac19367
font_02_sfnt_off00008e00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E00 18328 bytes
SHA-256: c0a64c35313388beafce2145b76a0bf40d6659a82da461cbcb21248082e95923