Malicious PDF — malware analysis report

Static analysis result for SHA-256 323742a71981ab9b…

MALICIOUS

PDF

35.4 KB Created: 2021-05-21 07:05:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: f11cc3c02e8aa1712f25d5ac06cf85cf SHA-1: 65ec2000c85acb7536996dc5614fe71584df50ee SHA-256: 323742a71981ab9b9324761faf262e17f7459c51a66e3c5733c3856ffaf3bf88
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a common lure of "free generators" and "game hacks" to entice users to click on embedded links. These links, such as the primary one to `https://netcdn.xyz/app/835599320/free-tiktok-views-no-verification-game-hack`, lead to known malicious redirector infrastructure. The document body and embedded URLs suggest a campaign focused on tricking users into visiting scam sites related to popular games and social media platforms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/835599320/free-tiktok-views-no-verification-game-hack In PDF document text
    • http://babbibooth.com/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://babbibooth.com/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000300c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x300C 24944 bytes
SHA-256: 55c1452017f9b36d4fa7205f142722391ef1b0fcf133f6daf1adc8fb1a123c46
font_01_sfnt_off00006992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6992 17984 bytes
SHA-256: 9795b21d017140d10c0b41d7b2b96a83a6c965cfa279b8aa3b98cbcfef695b0e

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