Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e7cb93682384ea1…

MALICIOUS

PDF

45.1 KB Created: 2021-05-17 01:01:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: ba91d481f5fe0f90aafb5d985d1a1aee SHA-1: 4a0939c696a48b8b50adb700cf47e7f32e922bc5 SHA-256: 9e7cb93682384ea17823eef632ab2cf8abec8a0ff33311fdea8a7d7669df8046
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external resources, including a primary redirector URL associated with malicious activity. The heuristics indicate a lure for game hacks and a link farm, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious workflow designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/free-coin-master-spin-app-game-hack In PDF document text
    • http://escolaarboc.cat/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://escolaarboc.cat/images/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • http://escolaarboc.cat/images/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://escolaarboc.cat/images/coin-master-2021-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://escolaarboc.cat/images/coin-master-free-spins-daily-fb-champion_GM406889139.pdfIn PDF document text
    • http://escolaarboc.cat/images/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://escolaarboc.cat/images/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
    • http://escolaarboc.cat/images/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • http://escolaarboc.cat/images/haktuts-coin-master_GM406889139.pdfIn PDF document text
    • http://escolaarboc.cat/images/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://escolaarboc.cat/images/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://escolaarboc.cat/images/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://escolaarboc.cat/images/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • http://escolaarboc.cat/images/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • http://escolaarboc.cat/images/hack-crack-for-coin-master-currency_GM406889139.pdfIn PDF document text
    • http://escolaarboc.cat/images/roblox-controversy_GM431946152.pdfIn PDF document text
    • http://escolaarboc.cat/images/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://escolaarboc.cat/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://escolaarboc.cat/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://escolaarboc.cat/images/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_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_off000047ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47AD 27800 bytes
SHA-256: a28e78d993ff846e21e68ad87891743d3b94b5a6f79a67e4b48ed3c0377b9b1f
font_01_sfnt_off00008556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8556 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008f08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F08 17884 bytes
SHA-256: 6a5fc0e5ee3990f98fff047e5d02c1443490e61ce795861dff478bab25fb071a

Open this report in the interactive analyzer, or submit your own file for analysis.