Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b4047499bf84d51…

MALICIOUS

PDF

44.9 KB Created: 2021-05-14 02:05:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b99b1d7da90642b2f3312cb11819dc9c SHA-1: 696a86894f04699ec32efed4a80ac4174b0bf3c4 SHA-256: 0b4047499bf84d51929dde23afd7d3c756aaf9781a8d9ea17b0de97db8b86e80
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and cheats. The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-hack-tool-exe-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a social engineering tactic to trick users into downloading potentially malicious files or visiting compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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-tool-exe-game-hack In PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/robux-free-co_GM431946152.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/what-is-wurst_GM479516143.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/how-to-make-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/free-flip-master-coins_GM406889139.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/master-free-spin-and-coin-links-html-m-1_GM406889139.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/mcpe-master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/free-robux-safe_GM431946152.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/coin-master-free-spins-no-generator_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
font_00_sfnt_off00004cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CC7 24312 bytes
SHA-256: 3050b4256adb0c1c881566eb5a0639acce9705b692af29aa167054d6040bf03c
font_01_sfnt_off00008425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8425 2824 bytes
SHA-256: 381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
font_02_sfnt_off00008dc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DC8 18000 bytes
SHA-256: 4986d21a4b5a0dd9c27fb69bc80aac457c531d809421d21d3eeb28a335a679e5