Malicious PDF — malware analysis report

Static analysis result for SHA-256 57a5e21cd0f98276…

MALICIOUS

PDF

34.8 KB Created: 2021-06-22 06:13:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4ce7edb806278de61673bb77824d5003 SHA-1: 602fa66331b0dfc3ad80dd629d0e837676d234c8 SHA-256: 57a5e21cd0f9827606ef1183053c475a02316bc5510c50b3e5cce6edc263f30c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free currency to entice users to click on embedded links. The primary link directs to a known malicious redirector infrastructure, indicating a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/406889139/daily-spin-and-coin-game-hack In PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/roblox-speed-boats-free_GM431946152.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-games-using-nopde-engine_GM431946152.pdfIn PDF document text
    • https://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/roblox-hack-account-app_GM431946152.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/flamethrower-gun-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts_GM431946152.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_off0000321e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x321E 22636 bytes
SHA-256: ae6e0f995ef0da8f501ec681038984c176c0f357d174c76879da052b9f3eb972
font_01_sfnt_off000064df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64DF 18504 bytes
SHA-256: a34b4b4ce73ec5fdfb32968e5ec784ce7fd5cc173ee13541bf0a05304a2dba1e

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