Malicious PDF — malware analysis report

Static analysis result for SHA-256 f72db122084ecfd8…

MALICIOUS

PDF

42.4 KB Created: 2021-05-11 18:02:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8ee9b09e8e1e51a4294e81d154c5c1d5 SHA-1: 372d09f54d565f4246c1df2e93fd7b2de7c14606 SHA-256: f72db122084ecfd81a9e43153923108560ae6de7f385ae1e76505b39f2817d74
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at `https://netcdn.xyz/app/431946152/free-robux-survey-game-hack`. The document body and heuristics suggest a lure for free Robux or game hacks, which is a common social engineering tactic. The presence of a visual download button further supports the malicious workflow. No scripts were extracted from this sample.

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/431946152/free-robux-survey-game-hack In PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/best-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-village-4_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/minecraft-items_GM479516143.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://www.bandicam.comIn 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
font_00_sfnt_off000049cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49CB 25036 bytes
SHA-256: ec9837d67b7425ce40fede67f8ed1496aa234d43c8388f9b17adc4e4e63348cd
font_01_sfnt_off0000835a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x835A 18308 bytes
SHA-256: 74a940f1217583ab80956cd168fb81f959241543e2b3413e790743682303989f

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